WO2007044345A2 - Method and apparatus for treating wastewater - Google Patents
Method and apparatus for treating wastewater Download PDFInfo
- Publication number
- WO2007044345A2 WO2007044345A2 PCT/US2006/038664 US2006038664W WO2007044345A2 WO 2007044345 A2 WO2007044345 A2 WO 2007044345A2 US 2006038664 W US2006038664 W US 2006038664W WO 2007044345 A2 WO2007044345 A2 WO 2007044345A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compartment
- wastewater
- membrane bioreactor
- jet assembly
- treatment system
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/07—Alkalinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/38—Gas flow rate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- the present invention relates to a system and method for treating wastewater, and more particularly to a wastewater treatment system and method utilizing a membrane bioreactor.
- membrane bioreactors combining biological and physical processes in one stage promise to be more compact, efficient and economic.
- Membrane bioreactors are typically sized to accommodate community and large-scale sewage treatment, i.e. 160,000 gpd, and 20-40 mgd and more.
- construction and energy use costs associated with large scale MBR systems are significant.
- the invention relates to a system and method of treating wastewater.
- a wastewater treatment system includes a bioreactor comprising a first compartment and a second compartment, means for periodically aerating at least one of the first compartment and the second compartment, and a membrane bioreactor fluidly connected to at least one of an outlet of the first compartment and an outlet of the second compartment.
- the means for aerating at least one compartment comprises a jet assembly positioned in each compartment.
- Another embodiment is directed to a method or treating wastewater comprising providing a wastewater to one of a first compartment, a second compartment, and combinations thereof, alternating between anoxic conditions and aerobic conditions within the same compartment, and passing the wastewater from the at least one of the first compartment and the second compartment to a membrane bloreactor.
- Another embodiment is directed to a computer-readable medium having computer- readable signals stored thereon that define instruction that, as a result of being executed by a computer, instruct the computer to perform a method of controlling a wastewater treatment system comprising actor of receiving an input signal respective of a characteristic of wastewater in a first compartment of a bioreactor and regulating an amount of air directed to the first compartment.
- FIG. 1 is a schematic diagram in accordance with one or more embodiments of the invention.
- FIG. 2 is a block diagram illustrating a treatment system in accordance with one or more embodiments of the invention
- FIG. 3 is a schematic diagram illustrating a computer system upon which one or more embodiments of the invention may be practiced.
- FIG. 4 is a schematic illustration of a storage system that may be used with the computer system of FIG. 3 in accordance with one or more embodiment so the invention.
- the invention is directed to wastewater treatment systems utilizing membrane bioreactors (MBR' s).
- Wastewater defines a stream of waste from a residential or community source, having pollutants of biodegradable material, inorganic or organic compounds capable of being decomposed by bacteria, flowing into the wastewater treatment system.
- a "wastewater treatment system” is a system, typically a biological treatment system, having a biomass population of bacterial micro-organisms of a diversity of types of bacteria, used to digest biodegradable material.
- the biomass requires an environment that provides the proper conditions for growth.
- One embodiment of the present invention includes a plurality of biological basins operated simultaneously.
- the plurality of biological basins may comprise individual basins positioned near or adjacent to one another, or a single basin with a plurality of compartments.
- the terms "basin” and “compartment” are used interchangeably to denote an individual treatment zone.
- at least two basins are positioned adjacent one another and share a common interior wall which may reduce construction costs.
- a suspension system may be disposed in each of the plurality of basins.
- the suspension system may be any system sufficient to suspend solids in the wastewater within the basin.
- the suspension system may be a stirrer or a plurality of fluid jet streams.
- the suspension system includes a plurality of jets positioned at or near a floor of each basin for delivering a jet stream of fluid and/or air.
- an aeration system is disposed in each of the plurality of basins.
- the aeration system may be any aeration system sufficient to deliver a suitable amount of air to promote aerobic conditions within the basin.
- the aeration system my produce fine bubbles, coarse bubbles, a jet stream of gas, and combinations thereof.
- the aeration system may be positioned in any suitable location within the compartment.
- the aeration system is fluidly connected to the jet suspension system, that is to say, the aeration system and the fluidization system may be combined into one system.
- air may be added to the wastewater in the fluidization system for delivery through a jet assembly.
- a single source of air may be used to supply one or more aerations systems.
- a single air blower may cycle air between and among multiple basins through switchover devices, such as diversion valves.
- switchover devices such as diversion valves.
- the use of a single source of air to cycle aeration between two or more basins may reduce original equipment costs, which typically include an individual source of air for each basin.
- a common wastewater feed is fluidly connected to each jet suspension system in multiple basins.
- the jet suspension system operates continually in each basin fluidizing each basin. Air may then be cycled among the basins through the jet suspension system.
- Air may then be cycled among the basins through the jet suspension system.
- air may diverted to one or more particular jet suspension systems of a particular basin or basins.
- a flow of air may be completely interrupted and air may be diverted away from the particular basin or basins. It is appreciated that the flow of air need not be completely interrupted when operating under anoxic conditions. For example, a minimum amount of air may be desired to assist in the anoxic process, so long as the air present under anoxic conditions is not sufficient to support aerobic conditions in the basin.
- a single blower may be used to cycle air among respective basins, wherein at any give time, one or more basins may run under aerobic conditions, while the remaining basin or basins may run under anoxic conditions.
- One advantage of the combined suspension/aeration system may a reduced incidence of clogging by settling solids as fluid (either wastewater or combined wastewater and air) is always passing through the combined suspension/aeration system.
- the combined suspension/aeration system may have any configuration to provide adequate suspension and aeration for the desired application and treatment volume.
- the combined system may comprise a jet assembly having a high efficiency jet having an orifice of a particular configuration and cross sectional area to promote suspension and aeration.
- Switchover of air flow form one or more basins to another or multiple other basins may by manual or automatic, based upon time of operating conditions within the basins, sensors detecting a characteristic of the wastewater within the basins, or combinations thereof.
- one or more sensors may detect dissolved oxygen content, oxidation reduction potential (ORP), alkalinity, and/or nitrate content of wastewater within a basin, thereby generating a signal indicating operating conditions are appropriate for either adding air or interrupting air flowing to a particular basin.
- ORP oxidation reduction potential
- alkalinity alkalinity
- nitrate content of wastewater within a basin
- alternating between anoxic and aerobic conditions is based upon a duration of a particular cycle and a concentration of dissolved oxygen in the basin.
- a decrease in the rate of change of the oxidation reduction potential may signal the end of the anoxic cycle.
- Cycling between anoxic and aerobic conditions within the same basin may provide advantages over batch or sequential batch operations which require transfer of basin contents from one basin to another.
- one advantage of cycling air among basins is that the contents of the basins need not be transferred to another basin in order to switch between anoxic and aerobic conditions, thereby reducing the number of basins required.
- the continuous operation of a single blower to supply at least two basins may also reduce energy costs.
- One or more of the basins may be operated as a batch flow mode, a sequencing batch reactor, or as a continuous flow batch reactor having continuous wastewater inflow.
- the wastewater may be directed to one or more basins equally, or directed to a particular basin based upon volume of flow or one or more physical or chemical characteristics of the wastewater.
- the chemical makeup of incoming wastewater may determine whether the incoming wastewater is to be directed to a basin currently operating under anoxic conditions, or to a basin currently operating under aerobic conditions.
- each basin cycles between anoxic and aerobic conditions, the residence time of wastewater within each basin determines the number of anoxic cycles and aerobic cycles to which the wastewater is exposed. For example, wastewater entering a basin may be exposed to only one anoxic cycle and one aerobic cycle. However, under a longer residence time, wastewater entering a basin may be exposed to multiple anoxic and aerobic cycles.
- the bacteria used in the basins may be any bacteria suitable to thrive in anoxic and/or anaerobic conditions.
- the anoxic process may form facultative bacteria that may work in both anoxic and aerobic conditions.
- the effluent from one or more of the basins may be directed to one or more membrane basins, each membrane basin having one or more filter membranes positioned therein.
- the one or more membrane basins may be formed similar to the biological basins.
- the membrane basins may comprise individual basins positioned near or adjacent to one another, or a single basin with a plurality of compartments, sharing at least one interior wall.
- the one or more biological basins are fluidly connected to one membrane basin.
- at least two basins are fluidly connected to at least two membrane basins.
- the filter membranes may have any configuration suitable for a particular purpose, such as sheet or hollow tube.
- the membrane may be formed of any material (natural or synthetic) suitable for a particular filtration.
- the membrane is formed of polymeric hollow fibers.
- the one or more filter membranes may be positioned in one or more membrane modules.
- the membrane modules may have any shape and cross sectional area suitable for use in a desired application, for example, square, rectangular, or cylindrical. In one embodiment, the membrane modules are cylindrical.
- one or more membrane modules may be positioned in a basin in such a way as to be completely submerged by fluid during operation.
- the membrane module may be positioned horizontally, vertically, or at an angle within the basin.
- Multiple membrane modules may be positioned adjacent one another, or located at predete ⁇ nined positions within the basin and may, but need not, be positioned in the same plane as others or parallel to one another.
- the membrane modules may be mounted directly to the basin or mounted to a module support which may be removably attached to the basin.
- a plurality of membrane modules are mounted to a module support to facilitate membrane maintenance and/or replacement. As exemplarily illustrated in FIG.
- some treatment systems 100 of the invention may comprise a biological basin 112 comprising two compartments 110, 120.
- Jet assembly systems 114 are fluidly connected to wastewater inlets 116 and aeration blower 150. Jet pumps 118 operate continuously to introduce wastewater into compartments 110, 120 as well as to suspend solids present in the wastewater.
- Aeration blower 150 also operates continuously providing a source of air that is cycled between the jet assembly 114 in compartment 110 and the jet assembly 114 in compartment 120.
- a switchover device 160 directs the flow of air between the two jet assemblies.
- Compartment 110 is fluidly connected to a first membrane basin 130.
- Compartment 120 is fluidly connected to a second membrane basin 130.
- Pumps 122 direct treated wastewater from each compartment 110, 120 to membrane basins 130, and assist in recycling missed liquor from the first and second membrane basins 130 to compartment 110 and compartment 120, respectively. Filtrate exits membrane basins 130 through lines 124.
- switchover device 160 diverts air to compartment 110 and interrupts air flow to compartment 120 so that compartment 110 operates under aerobic conditions and compartment 120 operates under anoxic conditions. Switchover device 160 may then interrupt air to the jet assembly 114 in compartment 110, and direct air to the jet assembly 114 in compartment 120, at which time conditions in compartment 110 change from aerobic to anoxic, and conditions in compartment 120 change from anoxic to aerobic.
- Some aspects of the invention may be particularly directed to controlling waste treatment operations that utilize membrane filtration techniques.
- a wastewater treatment system 200 may comprise a first biological compartment 210, a second biological compartment 220 and a membrane compartment 230. Facultative bacteria, which functions in both anoxic and aerobic conditions, may be positioned in both compartments 210, 220.
- a source of air 250 such as a blower, delivers air to one or both compartments 210, 220 through switchover device 260.
- Concentrated mixed liquor may be directed from membrane compartment 230 to one or both of compartments 210, 220 via switchover device 270.
- Controller 240 may respond to signals from sensors (not shown) positioned at any particular location within the system. For example, a sensor in compartment 210, which may be operating under anoxic conditions, may generate a signal indicating that denitrification has reached a desired extent of completion. Controller 240 may respond by generating a control signal causing switchover device 260 to direct air to compartment 210. Similarly, a sensor (not shown) in compartment 220, which may be operating under aerobic conditions, may generate a signal indicating that oxidation has reached a desired extent of completion. Controller 240 may respond by generating a control signal causing switchover device 260 to interrupt flow of air to compartment 220. Controller 240 may also respond to one or more sensors positioned in membrane compartment 230.
- a sensor in membrane compartment 230 may generate a signal indicating the concentrated mixed liquor being recycled from membrane compartment 230 should be further exposed to anoxic conditions.
- Controller 240 may respond by generating a control signal to switchover device 270 to direct recycled concentrated mixed liquor to either or both compartments 210, 220 which may be operating under anoxic conditions.
- controller 240 may respond to one or more sensors (not shown) positioned in a wastewater inlet to generate a signal to a flow controller (not shown) to direct incoming wastewater to one or both compartments 210, 220.
- the system and controller of one or more embodiments of the invention provide a versatile unit having multiple modes of operation, which can respond to multiple inputs to increase the efficiency of the wastewater treatment system.
- the controller of the system of the invention 240 may be implemented using one or more computer systems 300 as exemplarily shown in FIG. 3.
- Computer system 300 may be, for example, a general-purpose computer such as those based on in Intel PENTIUM ® -type processor, a Motorol PowerPC ® processor, a Hewlett-Packard PA-RISC ® processor, a Sun UltraAPARC ® processor, or any other type of processor or combination thereof.
- the computer system may include specially-programmed, special-purpose hardware, for example, an application-specific integrated circuit (ASIC) or controllers intended for water treatment systems.
- ASIC application-specific integrated circuit
- Computer system 300 can include one or more processors 302 typically connected to one or more memory devices 304, which can comprise, for example, any one or more of a disk drive memory, a flash memory device, a RAM memory device, or other device for storing data.
- Memory 304 is typically used for storing programs and data during operation of the system 200 and/or computer system 300.
- memory 304 may be used for storing historical data relating to the parameters over a period of time, as well as operating data.
- Software including programming code that implements embodiments of the invention, can be stored on a computer readable and/or writeable nonvolatile recording medium (discussed further with respect to FIG. 4), and then typically copied into memory 304 wherein it can then be executed by processor 302.
- Such programming code may be written in any of a plurality of programming languages, for example, Java, Visual Basic, C, C#, or C++, Fortran, Pascal, Eiffel, Basic, COBAL, or any of a variety of combinations thereof.
- Components of computer system 300 may be coupled by one or more interconnection mechanisms 306, which may include one or more busses (e.g., between components that are integrated within a same device) and/or a network (e.g., between components that reside on separate discrete devices).
- the interconnection mechanism typically enables communications (e.g., data, instructions) to be exchanged between components of system 300.
- Computer system 300 can also include one or more input devices 308, for example, a keyboard, mouse, trackball, microphone, touch screen, and other man-machine interface devices as well as one or more output devices 310, for example, a printing device, display screen, or speaker.
- computer system 300 may contain one or more interfaces (not shown) that can connect computer system 300 to a communication network (in addition or as an alternative to the network that may be formed by one or more of the components of system 300).
- the one or more input devices 308 may include sensors for measuring parameters of system 200 and/or components thereof.
- the sensors, the metering valves and/or pumps, or all of these components may be connected to a communication network (not shown) that is operatively coupled to computer system 300.
- a communication network not shown
- one or more compartments 210, 220, and 230, and/or components thereof may be configured as input devices that are connected to computer system 300.
- controller 300 can include one or more computer storage media such as readable and/or writeable nonvolatile recording medium 402 in which signals can be stored that define a program to be executed by one or more processors 302.
- Medium 402 may, for example, be a disk or flash memory.
- processor 302 can cause data, such as code that implements one or more embodiments of the invention, to be read from storage medium 402 into a memory 404 that allows for faster access to the information by the one or more processors than does medium 402.
- Memory 404 is typically a volatile, random access memory such as a dynamic random access memory (DRAM) or static memory (SRAM) or other suitable devices that facilitates information transfer to and from processor 302.
- DRAM dynamic random access memory
- SRAM static memory
- computer system 300 is shown by way of example as one type of computer system upon which various aspects of the invention may be practiced, it should be appreciated that the invention is not limited to being implemented in software, or on the computer system as exemplarily shown. Indeed, rather than implemented on, for example, a general purpose computer system, the controller, or components or subsections thereof, may alternatively be implemented as a dedicated system or as a dedicated programmable logic controller (PLC) or in a distributed control system. Further, it should be appreciated that one or more features or aspects of the invention may be implemented in software, hardware or firmware, or any combination thereof. For example, one or more segments of an algorithm executable by controller 240 can be performed in separate computers, which in turn, can be communication through one or more networks.
- PLC programmable logic controller
Abstract
The invention is directed to a method an apparatus for treating wastewater. The wastewater treatment system includes an aeration system that cycles between biological multiple biological basins. The system also includes one or more membrane basins. A method of the invention includes controlling the introduction of air into each biological basin in response to one or more operating conditions.
Description
METHOD AND APPARATUS FOR TREATING WASTEWATER.
BACKGROUND OF INVENTION 1. Field of Invention
The present invention relates to a system and method for treating wastewater, and more particularly to a wastewater treatment system and method utilizing a membrane bioreactor.
2. Discussion of Related Art
The importance of membranes for treatment of waste water is growing rapidly. With the arrival of submerged membrane processes where the membrane modules are immersed in a large feed tank and filtrate is collected typically through suction applied to the filtrate side of the membrane, membrane bioreactors (MBRs) combining biological and physical processes in one stage promise to be more compact, efficient and economic. Membrane bioreactors are typically sized to accommodate community and large-scale sewage treatment, i.e. 160,000 gpd, and 20-40 mgd and more. However, construction and energy use costs associated with large scale MBR systems are significant.
SUMMARY OF INVENTION
In accordance with one or more embodiments, the invention relates to a system and method of treating wastewater.
In one embodiment, a wastewater treatment system includes a bioreactor comprising a first compartment and a second compartment, means for periodically aerating at least one of the first compartment and the second compartment, and a membrane bioreactor fluidly connected to at least one of an outlet of the first compartment and an outlet of the second compartment. In another embodiment, the means for aerating at least one compartment comprises a jet assembly positioned in each compartment.
Another embodiment is directed to a method or treating wastewater comprising providing a wastewater to one of a first compartment, a second compartment, and combinations thereof, alternating between anoxic conditions and aerobic conditions within
the same compartment, and passing the wastewater from the at least one of the first compartment and the second compartment to a membrane bloreactor.
Another embodiment is directed to a computer-readable medium having computer- readable signals stored thereon that define instruction that, as a result of being executed by a computer, instruct the computer to perform a method of controlling a wastewater treatment system comprising actor of receiving an input signal respective of a characteristic of wastewater in a first compartment of a bioreactor and regulating an amount of air directed to the first compartment.
BRIEF DESCRIPTION OF DRAWINGS
The accompanying drawings, are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures is represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. In the drawings:
FIG. 1 is a schematic diagram in accordance with one or more embodiments of the invention;
FIG. 2 is a block diagram illustrating a treatment system in accordance with one or more embodiments of the invention; FIG. 3 is a schematic diagram illustrating a computer system upon which one or more embodiments of the invention may be practiced; and
FIG. 4 is a schematic illustration of a storage system that may be used with the computer system of FIG. 3 in accordance with one or more embodiment so the invention.
DETAILED DESCRIPTION
This invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having," "containing," "involving," and variations thereof herein, is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Only the transitional phrases "consisting of and "consisting essentially of are closed
or semi-closed transitional phrases, respectively, with respect to the claims. As used herein, the term "plurality" refers to two or more items or components.
The invention is directed to wastewater treatment systems utilizing membrane bioreactors (MBR' s). "Wastewater," as used herein, defines a stream of waste from a residential or community source, having pollutants of biodegradable material, inorganic or organic compounds capable of being decomposed by bacteria, flowing into the wastewater treatment system. As used herein, a "wastewater treatment system" is a system, typically a biological treatment system, having a biomass population of bacterial micro-organisms of a diversity of types of bacteria, used to digest biodegradable material. Notably, the biomass requires an environment that provides the proper conditions for growth.
One embodiment of the present invention includes a plurality of biological basins operated simultaneously. The plurality of biological basins may comprise individual basins positioned near or adjacent to one another, or a single basin with a plurality of compartments. As used herein, the terms "basin" and "compartment" are used interchangeably to denote an individual treatment zone. In one embodiment, at least two basins are positioned adjacent one another and share a common interior wall which may reduce construction costs.
According to one embodiment, a suspension system may be disposed in each of the plurality of basins. The suspension system may be any system sufficient to suspend solids in the wastewater within the basin. For example, the suspension system may be a stirrer or a plurality of fluid jet streams. In one embodiment, the suspension system includes a plurality of jets positioned at or near a floor of each basin for delivering a jet stream of fluid and/or air.
In one embodiment, an aeration system is disposed in each of the plurality of basins. The aeration system may be any aeration system sufficient to deliver a suitable amount of air to promote aerobic conditions within the basin. The aeration system my produce fine bubbles, coarse bubbles, a jet stream of gas, and combinations thereof. The aeration system may be positioned in any suitable location within the compartment. In one embodiment, the aeration system is fluidly connected to the jet suspension system, that is to say, the aeration system and the fluidization system may be combined into one system. In one embodiment, when it is desirable to aerate one or more basins, air may be added to the wastewater in the fluidization system for delivery through a jet assembly. In one embodiment, a single source of air may be used to supply one or more aerations systems. For example, a single air blower may cycle air between and among multiple basins through switchover devices, such as diversion valves. The use of a single source of air to cycle aeration between two or more
basins may reduce original equipment costs, which typically include an individual source of air for each basin.
In one embodiment, a common wastewater feed is fluidly connected to each jet suspension system in multiple basins. The jet suspension system operates continually in each basin fluidizing each basin. Air may then be cycled among the basins through the jet suspension system. When aeration of one or more basins is desired, air may diverted to one or more particular jet suspension systems of a particular basin or basins. When anoxic conditions are desired, a flow of air may be completely interrupted and air may be diverted away from the particular basin or basins. It is appreciated that the flow of air need not be completely interrupted when operating under anoxic conditions. For example, a minimum amount of air may be desired to assist in the anoxic process, so long as the air present under anoxic conditions is not sufficient to support aerobic conditions in the basin.
In one embodiment, a single blower may be used to cycle air among respective basins, wherein at any give time, one or more basins may run under aerobic conditions, while the remaining basin or basins may run under anoxic conditions. One advantage of the combined suspension/aeration system may a reduced incidence of clogging by settling solids as fluid (either wastewater or combined wastewater and air) is always passing through the combined suspension/aeration system.
The combined suspension/aeration system may have any configuration to provide adequate suspension and aeration for the desired application and treatment volume. For example, the combined system may comprise a jet assembly having a high efficiency jet having an orifice of a particular configuration and cross sectional area to promote suspension and aeration.
Switchover of air flow form one or more basins to another or multiple other basins may by manual or automatic, based upon time of operating conditions within the basins, sensors detecting a characteristic of the wastewater within the basins, or combinations thereof. For example, one or more sensors may detect dissolved oxygen content, oxidation reduction potential (ORP), alkalinity, and/or nitrate content of wastewater within a basin, thereby generating a signal indicating operating conditions are appropriate for either adding air or interrupting air flowing to a particular basin. In one embodiment, alternating between anoxic and aerobic conditions is based upon a duration of a particular cycle and a concentration of dissolved oxygen in the basin. In another embodiment, a decrease in the rate of change of the oxidation reduction potential may signal the end of the anoxic cycle.
Cycling between anoxic and aerobic conditions within the same basin may provide advantages over batch or sequential batch operations which require transfer of basin contents from one basin to another. For example, one advantage of cycling air among basins is that the contents of the basins need not be transferred to another basin in order to switch between anoxic and aerobic conditions, thereby reducing the number of basins required. The continuous operation of a single blower to supply at least two basins may also reduce energy costs.
One or more of the basins may be operated as a batch flow mode, a sequencing batch reactor, or as a continuous flow batch reactor having continuous wastewater inflow. In a continuous flow batch reactor, the wastewater may be directed to one or more basins equally, or directed to a particular basin based upon volume of flow or one or more physical or chemical characteristics of the wastewater. For example, the chemical makeup of incoming wastewater may determine whether the incoming wastewater is to be directed to a basin currently operating under anoxic conditions, or to a basin currently operating under aerobic conditions.
Because each basin cycles between anoxic and aerobic conditions, the residence time of wastewater within each basin determines the number of anoxic cycles and aerobic cycles to which the wastewater is exposed. For example, wastewater entering a basin may be exposed to only one anoxic cycle and one aerobic cycle. However, under a longer residence time, wastewater entering a basin may be exposed to multiple anoxic and aerobic cycles.
The bacteria used in the basins may be any bacteria suitable to thrive in anoxic and/or anaerobic conditions. In one embodiment, the anoxic process may form facultative bacteria that may work in both anoxic and aerobic conditions.
In another embodiment, the effluent from one or more of the basins may be directed to one or more membrane basins, each membrane basin having one or more filter membranes positioned therein. The one or more membrane basins may be formed similar to the biological basins. For example, if multiple membrane basins are desired, the membrane basins may comprise individual basins positioned near or adjacent to one another, or a single basin with a plurality of compartments, sharing at least one interior wall. In one embodiment, the one or more biological basins are fluidly connected to one membrane basin. In another embodiment, at least two basins are fluidly connected to at least two membrane basins.
The filter membranes may have any configuration suitable for a particular purpose, such as sheet or hollow tube. The membrane may be formed of any material (natural or
synthetic) suitable for a particular filtration. In one embodiment, the membrane is formed of polymeric hollow fibers. The one or more filter membranes may be positioned in one or more membrane modules. The membrane modules may have any shape and cross sectional area suitable for use in a desired application, for example, square, rectangular, or cylindrical. In one embodiment, the membrane modules are cylindrical.
According to one embodiment of the invention, one or more membrane modules may be positioned in a basin in such a way as to be completely submerged by fluid during operation. For example, the membrane module may be positioned horizontally, vertically, or at an angle within the basin. Multiple membrane modules may be positioned adjacent one another, or located at predeteπnined positions within the basin and may, but need not, be positioned in the same plane as others or parallel to one another. The membrane modules may be mounted directly to the basin or mounted to a module support which may be removably attached to the basin. In one embodiment, a plurality of membrane modules are mounted to a module support to facilitate membrane maintenance and/or replacement. As exemplarily illustrated in FIG. 1, some treatment systems 100 of the invention may comprise a biological basin 112 comprising two compartments 110, 120. Jet assembly systems 114 are fluidly connected to wastewater inlets 116 and aeration blower 150. Jet pumps 118 operate continuously to introduce wastewater into compartments 110, 120 as well as to suspend solids present in the wastewater. Aeration blower 150 also operates continuously providing a source of air that is cycled between the jet assembly 114 in compartment 110 and the jet assembly 114 in compartment 120. A switchover device 160 directs the flow of air between the two jet assemblies. Compartment 110 is fluidly connected to a first membrane basin 130. Compartment 120 is fluidly connected to a second membrane basin 130. Pumps 122 direct treated wastewater from each compartment 110, 120 to membrane basins 130, and assist in recycling missed liquor from the first and second membrane basins 130 to compartment 110 and compartment 120, respectively. Filtrate exits membrane basins 130 through lines 124.
During operation, switchover device 160 diverts air to compartment 110 and interrupts air flow to compartment 120 so that compartment 110 operates under aerobic conditions and compartment 120 operates under anoxic conditions. Switchover device 160 may then interrupt air to the jet assembly 114 in compartment 110, and direct air to the jet assembly 114 in compartment 120, at which time conditions in compartment 110 change from aerobic to anoxic, and conditions in compartment 120 change from anoxic to aerobic.
Some aspects of the invention may be particularly directed to controlling waste treatment operations that utilize membrane filtration techniques. For example, with reference to FIG. 2, a wastewater treatment system 200 may comprise a first biological compartment 210, a second biological compartment 220 and a membrane compartment 230. Facultative bacteria, which functions in both anoxic and aerobic conditions, may be positioned in both compartments 210, 220. Wastewater enters compartments 210, 220 from wastewater source 218, such as jet pumps. A source of air 250, such as a blower, delivers air to one or both compartments 210, 220 through switchover device 260. Concentrated mixed liquor may be directed from membrane compartment 230 to one or both of compartments 210, 220 via switchover device 270.
Controller 240 may respond to signals from sensors (not shown) positioned at any particular location within the system. For example, a sensor in compartment 210, which may be operating under anoxic conditions, may generate a signal indicating that denitrification has reached a desired extent of completion. Controller 240 may respond by generating a control signal causing switchover device 260 to direct air to compartment 210. Similarly, a sensor (not shown) in compartment 220, which may be operating under aerobic conditions, may generate a signal indicating that oxidation has reached a desired extent of completion. Controller 240 may respond by generating a control signal causing switchover device 260 to interrupt flow of air to compartment 220. Controller 240 may also respond to one or more sensors positioned in membrane compartment 230. For example, a sensor in membrane compartment 230 may generate a signal indicating the concentrated mixed liquor being recycled from membrane compartment 230 should be further exposed to anoxic conditions. Controller 240 may respond by generating a control signal to switchover device 270 to direct recycled concentrated mixed liquor to either or both compartments 210, 220 which may be operating under anoxic conditions. Similarly, controller 240 may respond to one or more sensors (not shown) positioned in a wastewater inlet to generate a signal to a flow controller (not shown) to direct incoming wastewater to one or both compartments 210, 220.
The system and controller of one or more embodiments of the invention provide a versatile unit having multiple modes of operation, which can respond to multiple inputs to increase the efficiency of the wastewater treatment system.
The controller of the system of the invention 240 may be implemented using one or more computer systems 300 as exemplarily shown in FIG. 3. Computer system 300 may be,
for example, a general-purpose computer such as those based on in Intel PENTIUM® -type processor, a Motorol PowerPC® processor, a Hewlett-Packard PA-RISC® processor, a Sun UltraAPARC® processor, or any other type of processor or combination thereof. Alternatively, the computer system may include specially-programmed, special-purpose hardware, for example, an application-specific integrated circuit (ASIC) or controllers intended for water treatment systems.
Computer system 300 can include one or more processors 302 typically connected to one or more memory devices 304, which can comprise, for example, any one or more of a disk drive memory, a flash memory device, a RAM memory device, or other device for storing data. Memory 304 is typically used for storing programs and data during operation of the system 200 and/or computer system 300. For example, memory 304 may be used for storing historical data relating to the parameters over a period of time, as well as operating data. Software, including programming code that implements embodiments of the invention, can be stored on a computer readable and/or writeable nonvolatile recording medium (discussed further with respect to FIG. 4), and then typically copied into memory 304 wherein it can then be executed by processor 302. Such programming code may be written in any of a plurality of programming languages, for example, Java, Visual Basic, C, C#, or C++, Fortran, Pascal, Eiffel, Basic, COBAL, or any of a variety of combinations thereof.
Components of computer system 300 may be coupled by one or more interconnection mechanisms 306, which may include one or more busses (e.g., between components that are integrated within a same device) and/or a network (e.g., between components that reside on separate discrete devices). The interconnection mechanism typically enables communications (e.g., data, instructions) to be exchanged between components of system 300. Computer system 300 can also include one or more input devices 308, for example, a keyboard, mouse, trackball, microphone, touch screen, and other man-machine interface devices as well as one or more output devices 310, for example, a printing device, display screen, or speaker. In addition, computer system 300 may contain one or more interfaces (not shown) that can connect computer system 300 to a communication network (in addition or as an alternative to the network that may be formed by one or more of the components of system 300).
According to one or more embodiments of the invention, the one or more input devices 308 may include sensors for measuring parameters of system 200 and/or components thereof. Alternatively, the sensors, the metering valves and/or pumps, or all of these components may be connected to a communication network (not shown) that is operatively coupled to computer system 300. For example, one or more compartments 210, 220, and 230, and/or components thereof, may be configured as input devices that are connected to computer system 300. Any one or more of the above may be coupled to another computer system or component to communicate with computer system 300 over one or more communication networks. Such a configuration permits any sensor or signal-generating device to be located at a significant distance from the computer system and/or allow any sensor to be located at a significant distance from any subsystem and/or the controller, while still providing data therebetween. Such communication mechanisms may be effected by utilizing any suitable technique including but not limited to those utilizing wireless protocols. As exemplarily shown in FIG. 4, controller 300 can include one or more computer storage media such as readable and/or writeable nonvolatile recording medium 402 in which signals can be stored that define a program to be executed by one or more processors 302. Medium 402 may, for example, be a disk or flash memory. In typical operation, processor 302 can cause data, such as code that implements one or more embodiments of the invention, to be read from storage medium 402 into a memory 404 that allows for faster access to the information by the one or more processors than does medium 402. Memory 404 is typically a volatile, random access memory such as a dynamic random access memory (DRAM) or static memory (SRAM) or other suitable devices that facilitates information transfer to and from processor 302.
Although computer system 300 is shown by way of example as one type of computer system upon which various aspects of the invention may be practiced, it should be appreciated that the invention is not limited to being implemented in software, or on the computer system as exemplarily shown. Indeed, rather than implemented on, for example, a general purpose computer system, the controller, or components or subsections thereof, may alternatively be implemented as a dedicated system or as a dedicated programmable logic controller (PLC) or in a distributed control system. Further, it should be appreciated that one or more features or aspects of the invention may be implemented in software, hardware or firmware, or any combination thereof. For example, one or more segments of an algorithm
executable by controller 240 can be performed in separate computers, which in turn, can be communication through one or more networks.
Having thus described several aspects of at least one embodiment of this invention, it should be apparent to those skilled in the art that the foregoing is merely illustrative and not limiting, having been presented by way of example only. Numerous modification and other embodiments are within the scope of the invention. In particular, although many embodiments presented herein involve specific combinations of method acts or system elements, it should be understood that those acts and those elements may be combined in other ways to accomplish the same objectives. Further, acts, elements, and features discusses only in connection with one embodiment are not intended to be excluded from a similar role in other embodiments.
It is to be appreciated that various alterations, modifications, and improvements can readily occur to those skilled in the art ant that such alterations, modifications, and improvements are intended to be part of the disclosure and within the spirit and scope of the invention.
Moreover, it should also be appreciated that the invention is directed to each feature, system, subsystem, or technique described herein and any combination of two or more features, systems, subsystems, and/or method, if such features, systems, subsystems, and techniques are not mutually inconsistent, is considered to be within the scope of the invention as embodied in the claims.
Use of ordinal terms such as "first," "second," "third," and the like in the claims to modify a claim element does not by itself connote any priority, precedence, or order of one claimed element over another or the temporal order in which acts of a method are performed, but are used merely as labels to distinguish one claim element having a certain name from another element having a same name (but for use of the ordinal term) to distinguish the claim elements.
Those skilled in the art should appreciate that the parameters and configuration described herein are exemplary and that actual parameters and/or configurations will depend on the specific application in which the systems and techniques of the invention are used. Those skilled in the art should also recognize or be able to ascertain, using no more than routing experimentation, equivalents to the specific embodiments of the invention. It is therefore to be understood that the embodiments described herein are presented by way of
example only and that, within the scope of the appended claims and equivalents thereto; the invention my be practice otherwise than as specifically described.
Claims
1. A wastewater treatment system comprising: a bioreactor comprising a first compartment and a second compartment; means for periodically aerating at least one of the first compartment and the second compartment; and a membrane bioreactor fluidly connected to at least one of an outlet of the first compartment and an outlet of the second compartment.
2. The wastewater treatment system of claim 1, wherein the means for periodically aerating at least one of the first compartment and the second compartment comprises a jet assembly positioned in the first compartment and a jet assembly positioned in the second compartment.
3. The wastewater treatment system of claim 2, further comprising a source of wastewater fluidly connected to the jet assembly in the first compartment and to the jet assembly in the second compartment.
4. The wastewater treatment system of claim 3, further comprising a source of air fluidly connected to the jet assembly in the first compartment and the jet assembly in the second compartment.
5. The wastewater treatment system of claim 4, further comprising: a controller in communication with the jet assembly in the first compartment and the jet assembly in the second compartment; the controller configured to generate a first control signal that adjusts a flow rate of air to the jet assembly in the first compartment, and a second control signal that adjusts a flow rate of air to the jet assembly in the second compartment.
6. The wastewater treatment system of claim 5, further comprising:a first sensor positioned in the first compartment; and a second sensor positioned in the second compartment, wherein the controller is responsive to a signal generated by the first sensor and a signal generated by the second sensor.
7. The wastewater treatment system of claim 1, further comprising: a secondary membrane bioreactor fluidly connected to at least one of the outlet of the first compartment and the outlet of the second compartment.
8. The wastewater treatment system of claim 7, further comprising: a recirculation line fluidly connected to an outlet of at least one of the membrane bioreactor and the secondary membrane bioreactor; and a third sensor positioned at an outlet of the membrane bioreactor.
9. The wastewater treatment system of claim 8, further comprising; a fourth sensor positioned at an outlet of the secondary membrane bioreactor.
10. The wastewater treatnent system of claim 9, wherein the controller is in communication with the outlet of the membrane bioreactor and the outlet of the secondary membrane bioreactor, the controller configured to provide a third control signal response to the third sensor to adjust flow from the membrane bioreactor to the recirculation line, and a fourth control signal responsive to the fourth sensor to adjust flow from the secondary membrane bioreactor to the recirculation line.
11. The wastewater treatment system of claim 10, wherein the controller is in communication with a recirculation inlet in the first compartment and a recirculation inlet of the second compartment, the controller configured to proved a fifth control signal responsive to the first sensor to adjust flow from the recirculation line to the recirculation inlet of the first compartment, and a sixth control signal responsive to the second sensor to adjust flow from the recirculation line to recirculation inlet of the second compartment.
12. The wastewater treatment system of claim 10, wherein the controller is in communication with the jet assembly in the first compartment and the jet assembly in the second compartment, the controller configured to provide a seventh control signal responsive to the first sensor to adjust the flow of air into the jet assembly of the first compartment, and an eighth control signal responsive to the second sensor to adjust the flow of air into the jet assembly of the second compartment.
13. A method of treating wastewater comprising: providing a wastewater to one of a first compartment, a second compartment, and combinations thereof; alternating between anoxic conditions and aerobic conditions within the same compartment; passing the wastewater from the at least one of the first compartment and the second compartment to a membrane bioreactor.
14. The method of treating wastewater of claim 13, wherein alternating between anoxic conditions and aerobic conditions comprises introducing air flow into at least one of the first compartment and the second compartment; and interrupting the air flow into the at least one of the first compartment and the second compartment.
15. The method of treating wastewater of claim 14, further comprising: detecting a characteristic of the wastewater in the first compartment alternating between anoxic conditions and aerobic conditions in the first compartment.
16. The method of treating wastewater of claim 15, further comprising: detecting a characteristic of the wastewater in the second compartment prior to alternating between anoxic and aerobic conditions in the second compartment.
17. The method of treating wastewater of claim 16, further comprising: detecting a characteristic of a concentrated mixed liquor in the membrane bioreactor; and passing a portion of the concentrated mixed liquor in the membrane bioreactor to at least one of the first compartment and the second compartment.
18. A computer-readable medium having computer-readable signals stored thereon that define instruction that, as a result of being executed by a computer, instruct the computer to perform a method of controlling a wastewater treatment system comprising acts of: receiving an input signal representative of a characteristic of wastewater in a first compartment of a bioreactor; and regulating an amount of air directed to the first compartment.
19. The computer-readable medium of claim 18, wherein the method further comprises: receiving an input signal representative of a characteristic of wastewater in a second compartment of the bioreactor; and regulating an amount of air directed to the second compartment.
20. The computer-readable medium of claim 18, wherein the method further comprises: receiving an input signal representative of a characteristic of a concentrated mixed liquor in a membrane bioreactor; and directing a flow of the concentrated mixed liquor from the membrane bioreactor to one of the first compartment, the second compartment, and combinations thereof.
21. The computer-readable medium of claim 20, wherein the method further comprises: regulating an amount of wastewater entering the first compartment and the second compartment.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72374505P | 2005-10-05 | 2005-10-05 | |
US60/723,745 | 2005-10-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007044345A2 true WO2007044345A2 (en) | 2007-04-19 |
WO2007044345A3 WO2007044345A3 (en) | 2007-11-08 |
Family
ID=37943323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/038664 WO2007044345A2 (en) | 2005-10-05 | 2006-10-04 | Method and apparatus for treating wastewater |
Country Status (2)
Country | Link |
---|---|
US (2) | US7563363B2 (en) |
WO (1) | WO2007044345A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111533246A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous denitrification accurate aeration system |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1736234A3 (en) | 1996-12-20 | 2007-06-13 | Siemens Water Technologies Corp. | Method for scouring fouled membranes |
AUPR421501A0 (en) | 2001-04-04 | 2001-05-03 | U.S. Filter Wastewater Group, Inc. | Potting method |
AUPR692401A0 (en) | 2001-08-09 | 2001-08-30 | U.S. Filter Wastewater Group, Inc. | Method of cleaning membrane modules |
AUPS300602A0 (en) | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
US7938966B2 (en) | 2002-10-10 | 2011-05-10 | Siemens Water Technologies Corp. | Backwash method |
NZ545206A (en) | 2003-08-29 | 2009-03-31 | Siemens Water Tech Corp | Backwash |
NZ546959A (en) | 2003-11-14 | 2008-03-28 | Siemens Water Tech Corp | Improved cleaning method for a porous membrane filtration module |
WO2005092799A1 (en) | 2004-03-26 | 2005-10-06 | U.S. Filter Wastewater Group, Inc. | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
CN101426565B (en) | 2004-04-22 | 2012-04-18 | 西门子工业公司 | Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials |
CA2579168C (en) | 2004-09-07 | 2015-06-23 | Siemens Water Technologies Corp. | Membrane filtration with reduced volume cleaning step |
CN101039739B (en) | 2004-09-14 | 2014-10-08 | 伊沃夸水处理技术有限责任公司 | Methods and apparatus for removing solids from a membrane module |
WO2006029465A1 (en) | 2004-09-15 | 2006-03-23 | Siemens Water Technologies Corp. | Continuously variable aeration |
SG150505A1 (en) | 2004-12-24 | 2009-03-30 | Siemens Water Tech Corp | Cleaning in membrane filtration systems |
US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
CA2605757A1 (en) | 2005-04-29 | 2006-11-09 | Siemens Water Technologies Corp. | Chemical clean for membrane filter |
SG140229A1 (en) | 2005-08-22 | 2008-03-28 | Siemens Water Tech Corp | An assembly for water filtration using a tube manifold to minimise backwash |
WO2007044415A2 (en) * | 2005-10-05 | 2007-04-19 | Siemens Water Technologies Corp. | Method and apparatus for treating wastewater |
US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
EP3395433A1 (en) | 2007-05-29 | 2018-10-31 | Evoqua Water Technologies LLC | Membrane cleaning with pulsed airlift pump |
KR100935916B1 (en) * | 2008-03-26 | 2010-01-06 | 삼창기업 주식회사 | Advanced method for controlling the wastewater treatment apparatus with two stage reactor |
JP2013500144A (en) | 2008-07-24 | 2013-01-07 | シーメンス インダストリー インコーポレイテッド | Method and filtration system for providing structural support to a filtration membrane module array in a filtration system |
CA2734796A1 (en) | 2008-08-20 | 2010-02-25 | Siemens Water Technologies Corp. | Improved membrane system backwash energy efficiency |
US8287733B2 (en) * | 2008-08-28 | 2012-10-16 | Nick Juergen T | Membrane bioreactor |
AU2010101488B4 (en) | 2009-06-11 | 2013-05-02 | Evoqua Water Technologies Llc | Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane |
WO2010151212A1 (en) * | 2009-06-23 | 2010-12-29 | Ge Healthcare Bio-Sciences Ab | Simulator device |
US20110089171A1 (en) * | 2009-10-21 | 2011-04-21 | Reilly James P | Wastewater treatment process basins |
ES2738898T3 (en) | 2010-04-30 | 2020-01-27 | Evoqua Water Tech Llc | Fluid flow distribution device |
PL391606A1 (en) * | 2010-06-24 | 2012-01-02 | Jerzy Robert Ślusarczyk | Method for biological wastewater treatment |
US9120038B2 (en) | 2010-09-07 | 2015-09-01 | Liberty Evans, Llc | Wastewater treatment system design |
WO2012040412A1 (en) | 2010-09-24 | 2012-03-29 | Siemens Industry, Inc. | Fluid control manifold for membrane filtration system |
US8821727B2 (en) * | 2011-06-08 | 2014-09-02 | Aero-Mod Incorporated | Systems and methods for treating wastewater |
US8910799B2 (en) | 2011-08-01 | 2014-12-16 | Enveera, Inc. | Integrated membrane system for distributed water treatment |
SG11201401089PA (en) | 2011-09-30 | 2014-04-28 | Evoqua Water Technologies Llc | Improved manifold arrangement |
KR20140097140A (en) | 2011-09-30 | 2014-08-06 | 에보쿠아 워터 테크놀로지스 엘엘씨 | Isolation valve |
AU2013280452B2 (en) | 2012-06-28 | 2017-07-20 | Evoqua Water Technologies Llc | A potting method |
US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
EP2900356A1 (en) | 2012-09-27 | 2015-08-05 | Evoqua Water Technologies LLC | Gas scouring apparatus for immersed membranes |
CN102897916B (en) * | 2012-10-25 | 2014-02-26 | 宁夏宝塔石化集团有限公司 | Biological two-stage aeration filter pool and water distribution and air distribution method of pool body |
US9475715B2 (en) | 2012-11-16 | 2016-10-25 | Xylem Water Solutions U.S.A., Inc. | Optimized process and aeration performance with an advanced control algorithm |
AU2014329869B2 (en) | 2013-10-02 | 2018-06-14 | Evoqua Water Technologies Llc | A method and device for repairing a membrane filtration module |
US10150684B2 (en) | 2015-01-13 | 2018-12-11 | Environmental Dynamics International Inc. | System and method for preventing ammonia rebound in a cold-weather bioreactor |
US9796611B2 (en) | 2015-01-13 | 2017-10-24 | Environmental Dynamics International, Inc. | Wastewater treatment system and method |
US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
JP6883459B2 (en) * | 2017-04-04 | 2021-06-09 | 株式会社クボタ | Organic wastewater treatment method and organic wastewater treatment equipment |
WO2019055721A1 (en) * | 2017-09-14 | 2019-03-21 | Evoqua Water Technologies Llc | Simultaneous nitrification/denitrification (sndn) in sequencing batch reactor applications |
CN109205784A (en) * | 2018-09-30 | 2019-01-15 | 浙江工商大学 | A kind of film bioreactor device and technique for sanitary sewage disposal |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040035770A1 (en) * | 2002-08-26 | 2004-02-26 | Edwards Haskell L. | Dynamically responsive aerobic to anoxic inter-zone flow control system for single vessel multi-zone bioreactor wastewater treatment plants |
US6758972B2 (en) * | 2000-03-02 | 2004-07-06 | Luc Vriens | Method and system for sustainable treatment of municipal and industrial waste water |
Family Cites Families (168)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US285321A (en) | 1883-09-18 | Pottery mold | ||
US256008A (en) | 1882-04-04 | Posoelain and china paste boxes | ||
US1997074A (en) | 1930-01-24 | 1935-04-09 | John Stogdell Stokes | Method of and apparatus for molding synthetic resinous articles |
US2080783A (en) | 1932-03-09 | 1937-05-18 | Celluloid Corp | Method of molding thermoplastic materials |
US2105700A (en) | 1936-07-13 | 1938-01-18 | William D Ramage | Process for purification of beverages |
US2843038A (en) | 1954-01-06 | 1958-07-15 | Robert O Manspeaker | Bakery apparatus and method |
US2926086A (en) | 1957-07-30 | 1960-02-23 | Universal Oil Prod Co | Stabilization of non-distilled alcoholic beverages and the resulting product |
US3183191A (en) | 1960-04-19 | 1965-05-11 | Hach Chemical Co | Stain and rust removing composition |
NL128859C (en) | 1960-09-19 | |||
US3198636A (en) | 1962-06-08 | 1965-08-03 | Norda Essential Oil And Chemic | Preservation of wine |
NL136034C (en) | 1965-12-22 | |||
US3492698A (en) | 1965-12-22 | 1970-02-03 | Du Pont | Centrifugal casting apparatus for forming a cast wall member extending transversely across an elongated bundle of substantially parallel hollow filaments of a fluid permeation separation apparatus |
US3462362A (en) | 1966-07-26 | 1969-08-19 | Paul Kollsman | Method of reverse osmosis |
US3556305A (en) | 1968-03-28 | 1971-01-19 | Amicon Corp | Composite membrane and process for making same |
US3591010A (en) | 1968-06-10 | 1971-07-06 | Pall Corp | Filter having a microporous layer attached thereto |
US3625827A (en) | 1968-09-27 | 1971-12-07 | Monsanto Co | Water-soluble polymer-enzyme products |
US3798636A (en) * | 1969-05-09 | 1974-03-19 | Gordon Eng Co | Series-shunt switching pair, particularly for synchro to digital conversion, dc or ac analog reference multiplying or plural synchro multiplexing |
US3700561A (en) | 1969-08-11 | 1972-10-24 | Pabst Brewing Co | Recovery of enzymes |
US3693406A (en) | 1970-01-26 | 1972-09-26 | Air Intake Renu | Method for inspecting filters |
US3708071A (en) | 1970-08-05 | 1973-01-02 | Abcor Inc | Hollow fiber membrane device and method of fabricating same |
US3654147A (en) | 1971-03-16 | 1972-04-04 | Biospherics Inc | Nitrate removal from sewage |
US3728256A (en) | 1971-06-22 | 1973-04-17 | Abcor Inc | Crossflow capillary dialyzer |
US3763055A (en) | 1971-07-07 | 1973-10-02 | Us Interior | Microporous support for reverse osmosis membranes |
GB1412983A (en) | 1971-11-30 | 1975-11-05 | Debell & Richardson | Method of producing porous plastic materials |
US3791631A (en) | 1972-02-17 | 1974-02-12 | Mm Ind Inc | Method and apparatus for making colored expanded foam articles |
US3804258A (en) | 1972-08-08 | 1974-04-16 | V Okuniewski | Filtering device |
US3843809A (en) | 1972-08-23 | 1974-10-22 | E Luck | Manufacture of alcoholic beverages |
US3955998A (en) | 1973-06-21 | 1976-05-11 | Phillips Petroleum Company | Aqueous gels for plugging fractures in subterranean formation and production of said aqueous gels |
FR2236537B1 (en) | 1973-07-11 | 1977-12-23 | Rhone Poulenc Ind | |
US3876738A (en) | 1973-07-18 | 1975-04-08 | Amf Inc | Process for producing microporous films and products |
US3992301A (en) | 1973-11-19 | 1976-11-16 | Raypak, Inc. | Automatic flushing system for membrane separation machines such as reverse osmosis machines |
US3968192A (en) | 1974-04-19 | 1976-07-06 | The Dow Chemical Company | Method of repairing leaky hollow fiber permeability separatory devices |
JPS51128880A (en) | 1975-05-02 | 1976-11-10 | Nippon Zeon Co | Method of securing yarn bundle end to case |
US4105731A (en) | 1975-05-02 | 1978-08-08 | Nippon Zeon Co., Ltd. | Method of embedding an end of a bundle of thread-like bodies in a molding material and controlling capillary action by said material |
IT1040274B (en) | 1975-07-30 | 1979-12-20 | Consiglio Nazionale Ricerche | PROCEDURE FOR PREPARATION OF ANISOTROPIC MEMBRANES SUPPORTED FOR REVERSE OSMOSIS BASED ON SYNTHETIC POLYAMIDES |
GB1496805A (en) | 1975-09-19 | 1978-01-05 | Unilever Ltd | Dithionite composition |
US4192750A (en) | 1976-08-09 | 1980-03-11 | Massey-Ferguson Inc. | Stackable filter head unit |
US4247498A (en) | 1976-08-30 | 1981-01-27 | Akzona Incorporated | Methods for making microporous products |
US4107043A (en) | 1977-03-03 | 1978-08-15 | Creative Dispensing Systems, Inc. | Inlet conduit fluid filter |
US4203848A (en) | 1977-05-25 | 1980-05-20 | Millipore Corporation | Processes of making a porous membrane material from polyvinylidene fluoride, and products |
US4138460A (en) | 1977-06-10 | 1979-02-06 | Cordis Dow Corp. | Method for forming tubesheets on hollow fiber tows and forming hollow fiber bundle assemblies containing same |
US4519909A (en) | 1977-07-11 | 1985-05-28 | Akzona Incorporated | Microporous products |
JPS6025194B2 (en) | 1977-08-04 | 1985-06-17 | 株式会社クラレ | centrifugal gluing device |
US4183890A (en) | 1977-11-30 | 1980-01-15 | Monsanto Company | Method of cutting hollow filaments embedded in resinous mass |
US4204961A (en) | 1978-03-15 | 1980-05-27 | Cusato John Jr | Filter apparatus with cleaning function |
US4227295A (en) | 1978-07-27 | 1980-10-14 | Baxter Travenol Laboratories, Inc. | Method of potting the ends of a bundle of hollow fibers positioned in a casing |
US4193780A (en) | 1978-03-20 | 1980-03-18 | Industrial Air, Inc. | Air filter construction |
IT1114714B (en) | 1978-03-25 | 1986-01-27 | Akzo Nv | POLYURETHANE INCORPORATION MASS AND RELATED PRODUCTION PROCESS |
NZ190436A (en) | 1978-05-15 | 1981-12-15 | Pall Corp | Preparation of skinless hydrophilic alcohol insoluble polyamide membranes membranes casting resin solutions |
JPS5535910A (en) | 1978-09-06 | 1980-03-13 | Teijin Ltd | Permselectivity composite membrane and preparation thereof |
US4188817A (en) | 1978-10-04 | 1980-02-19 | Standard Oil Company (Indiana) | Method for detecting membrane leakage |
JPS5554004A (en) | 1978-10-18 | 1980-04-21 | Teijin Ltd | Selective permeable membrane and its manufacturing |
BE874961A (en) | 1979-03-20 | 1979-09-20 | Studiecentrum Kernenergi | PROCESS FOR PREPARING A MEMBRANE, THEREFORE PREPARED MEMBRANE, ELECTROCHEMICAL CELL WITH SUCH MEMBRANE AND USING SUCH ELECTROchemical cell |
DE2915730A1 (en) | 1979-04-19 | 1980-10-30 | Kronsbein Dirk Gustav | CARTRIDGE FILTER |
US4218324A (en) | 1979-05-03 | 1980-08-19 | Textron, Inc. | Filter element having removable filter media member |
US4226921A (en) | 1979-07-16 | 1980-10-07 | The Dow Chemical Company | Selective plugging of broken fibers in tubesheet-hollow fiber assemblies |
US4248648A (en) | 1979-07-18 | 1981-02-03 | Baxter Travenol Laboratories, Inc. | Method of repairing leaks in a hollow capillary fiber diffusion device |
US4271026A (en) | 1979-10-09 | 1981-06-02 | Air Products And Chemicals, Inc. | Control of activated sludge wastewater treating process for enhanced phosphorous removal |
JPS5695304A (en) | 1979-12-28 | 1981-08-01 | Teijin Ltd | Perm selective composite membrane and its production |
US4629563B1 (en) | 1980-03-14 | 1997-06-03 | Memtec North America | Asymmetric membranes |
US4369605A (en) | 1980-07-11 | 1983-01-25 | Monsanto Company | Methods for preparing tube sheets for permeators having hollow fiber membranes |
DE3026718A1 (en) | 1980-07-15 | 1982-02-04 | Akzo Gmbh, 5600 Wuppertal | HOLLOW FIBER MEMBRANE FOR PLASMA SEPARATION |
JPS5770144A (en) | 1980-10-17 | 1982-04-30 | Asahi Glass Co Ltd | Organic solution of fluorinated copolymer containing carboxyl group |
US4384474A (en) | 1980-10-30 | 1983-05-24 | Amf Incorporated | Method and apparatus for testing and using membrane filters in an on site of use housing |
US4389363A (en) | 1980-11-03 | 1983-06-21 | Baxter Travenol Laboratories, Inc. | Method of potting microporous hollow fiber bundles |
JPS57102202A (en) | 1980-12-18 | 1982-06-25 | Toyobo Co Ltd | Fluid separator |
US4496470A (en) | 1981-01-12 | 1985-01-29 | The B. F. Goodrich Company | Cleaning composition |
JPS6059933B2 (en) | 1981-05-22 | 1985-12-27 | 工業技術院長 | Polymer membrane with maleic anhydride residues |
US4702840A (en) | 1982-02-05 | 1987-10-27 | Pall Corporation | Charge modified polyamide membrane |
US4707266A (en) | 1982-02-05 | 1987-11-17 | Pall Corporation | Polyamide membrane with controlled surface properties |
US4812235A (en) * | 1982-03-29 | 1989-03-14 | Hr Textron, Inc. | Filter element assembly replaceable mesh pack |
US4540490A (en) | 1982-04-23 | 1985-09-10 | Jgc Corporation | Apparatus for filtration of a suspension |
US4431545A (en) | 1982-05-07 | 1984-02-14 | Pall Corporation | Microporous filter system and process |
US4476112A (en) | 1982-05-10 | 1984-10-09 | Stay Fresh, Inc. | Food preservative composition |
WO1983003984A1 (en) | 1982-05-13 | 1983-11-24 | Gerhard Kunz | Method for the treatment of a liquid phase, particularly method for desalting aqueous solutions, as well as device for its implementation |
US4414172A (en) | 1982-05-21 | 1983-11-08 | Filtertek, Inc. | Process and apparatus for sealing a plurality of filter elements |
JPS5952507A (en) | 1982-06-03 | 1984-03-27 | デ−・エル・エム・ドクトル・ミユラ−・アクチエンゲゼルシヤフト | Apparatus for continuously concentrating suspension |
JPS5928971A (en) | 1982-08-06 | 1984-02-15 | 川澄化学工業株式会社 | Hollow yarn type mass transfer apparatus and production thereof |
US4414113A (en) | 1982-09-29 | 1983-11-08 | Ecodyne Corporation | Liquid purification using reverse osmosis hollow fibers |
JPS5992094A (en) | 1982-11-18 | 1984-05-28 | Agency Of Ind Science & Technol | Anaerobic digestion of organic waste matter |
GB2132366B (en) | 1982-12-27 | 1987-04-08 | Brunswick Corp | Method and device for testing the permeability of membrane filters |
CA1221645A (en) | 1983-02-28 | 1987-05-12 | Yoshihiro Okano | Filtration apparatus using hollow fiber-membrane |
DE3317396A1 (en) | 1983-05-13 | 1984-11-15 | Henkel KGaA, 4000 Düsseldorf | USE OF COLOYERS FROM ESTERS AND AMIDES OF ACRYLIC AND / OR METHACRYLIC ACIDS AS STOCK POINTS LOW FOR PARAFFIN SOLUTIONS |
GB8313635D0 (en) | 1983-05-17 | 1983-06-22 | Whatman Reeve Angel Plc | Porosimeter |
US4636296A (en) | 1983-08-18 | 1987-01-13 | Gerhard Kunz | Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions |
US4650586A (en) | 1983-09-26 | 1987-03-17 | Kinetico, Inc. | Fluid treatment system |
US4577289A (en) * | 1983-12-30 | 1986-03-18 | International Business Machines Corporation | Hardware key-on-disk system for copy-protecting magnetic storage media |
US4609465A (en) | 1984-05-21 | 1986-09-02 | Pall Corporation | Filter cartridge with a connector seal |
SE441236B (en) | 1984-06-18 | 1985-09-23 | Gambro Dialysatoren | PROCEDURE FOR MANUFACTURING A DEVICE CONTAINING A HALFIBER BUNCH |
EP0170895B1 (en) | 1984-07-09 | 1989-03-22 | Millipore Corporation | Improved electrodeionization apparatus and method |
JPS6125903U (en) | 1984-07-24 | 1986-02-15 | 株式会社 伊藤鉄工所 | filtration equipment |
DE3428307A1 (en) | 1984-08-01 | 1986-02-13 | Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg | DISPLAY DEVICE FOR THE POLLUTION LEVEL OF SUCTION AIR FILTERS |
US5192478A (en) * | 1984-10-22 | 1993-03-09 | The Dow Chemical Company | Method of forming tubesheet for hollow fibers |
US5198162A (en) * | 1984-12-19 | 1993-03-30 | Scimat Limited | Microporous films |
GB2168981B (en) | 1984-12-27 | 1988-07-06 | Asahi Chemical Ind | Porous fluorine resin membrane and process for preparation thereof |
US4642182A (en) | 1985-03-07 | 1987-02-10 | Mordeki Drori | Multiple-disc type filter with extensible support |
US4816160A (en) * | 1985-03-28 | 1989-03-28 | Memtec Limited | Cooling hollow fibre cross-flow separators |
US4704324A (en) * | 1985-04-03 | 1987-11-03 | The Dow Chemical Company | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups |
US4610789A (en) | 1985-04-22 | 1986-09-09 | Ppg Industries, Inc. | Filtration cartridge and reactor |
CA1247329A (en) | 1985-05-06 | 1988-12-28 | Craig J. Brown | Fluid treatment process and apparatus |
US4660411A (en) | 1985-05-31 | 1987-04-28 | Reid Philip L | Apparatus for measuring transmission of volatile substances through films |
US4656865A (en) | 1985-09-09 | 1987-04-14 | The Dow Chemical Company | System for analyzing permeation of a gas or vapor through a film or membrane |
US4687578A (en) | 1985-12-12 | 1987-08-18 | Monsanto Company | Fluid separation membranes |
DE3546091A1 (en) * | 1985-12-24 | 1987-07-02 | Kernforschungsz Karlsruhe | CROSS-CURRENT MICROFILTER |
DE3617724A1 (en) | 1986-05-27 | 1987-12-03 | Akzo Gmbh | METHOD FOR DETERMINING THE BLOW POINT OR THE BIGGEST PORE OF MEMBRANES OR FILTER MATERIALS |
FR2600265B1 (en) * | 1986-06-20 | 1991-09-06 | Rhone Poulenc Rech | DRY AND HYDROPHILIC SEMI-PERMEABLE MEMBRANES BASED ON VINYLIDENE POLYFLUORIDE |
US4670145A (en) | 1986-07-08 | 1987-06-02 | E. I. Du Pont De Nemours And Company | Multiple bundle fluid separation apparatus |
US5094750A (en) * | 1986-09-12 | 1992-03-10 | Memtec Limited | Hollow fibre filter cartridge and header |
EP0343247B1 (en) * | 1987-07-30 | 1993-03-03 | Toray Industries, Inc. | Porous polytetrafluoroethylene membrane, separating apparatus using same, and process for their production |
JPS6438197A (en) * | 1987-07-31 | 1989-02-08 | Nishihara Env San Res Co Ltd | Treatment of sewage |
US4904426A (en) * | 1988-03-31 | 1990-02-27 | The Dow Chemical Company | Process for the production of fibers from poly(etheretherketone)-type polymers |
US4999038A (en) * | 1989-02-07 | 1991-03-12 | Lundberg Bo E H | Filter unit |
US4988444A (en) * | 1989-05-12 | 1991-01-29 | E. I. Du Pont De Nemours And Company | Prevention of biofouling of reverse osmosis membranes |
IE903487A1 (en) * | 1989-09-29 | 1991-04-10 | Memtec Ltd | Filter cartridge manifold |
US5079272A (en) * | 1989-11-30 | 1992-01-07 | Millipore Corporation | Porous membrane formed from interpenetrating polymer network having hydrophilic surface |
DE3943249C2 (en) * | 1989-12-29 | 1993-11-18 | Seitz Filter Werke | Closed filter element |
DE4000978A1 (en) * | 1990-01-16 | 1991-07-18 | Basf Ag | METHOD FOR REMOVING HEAVY METALIONS FROM WINE AND WINE-BASED BEVERAGES |
US5639373A (en) * | 1995-08-11 | 1997-06-17 | Zenon Environmental Inc. | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
US5182019A (en) * | 1990-08-17 | 1993-01-26 | Zenon Environmental Inc. | Cartridge of hybrid frameless arrays of hollow fiber membranes and module containing an assembly of cartridges |
US5248424A (en) * | 1990-08-17 | 1993-09-28 | Zenon Environmental Inc. | Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
DK0510328T3 (en) * | 1991-03-07 | 1996-02-05 | Kubota Kk | Apparatus for treating activated sludge |
US5192442A (en) * | 1991-12-02 | 1993-03-09 | Zimpro Passavant Environmental Systems, Inc. | Multiple zone batch treatment process |
US5198116A (en) * | 1992-02-10 | 1993-03-30 | D.W. Walker & Associates | Method and apparatus for measuring the fouling potential of membrane system feeds |
US5480553A (en) * | 1992-02-12 | 1996-01-02 | Mitsubishi Rayon Co., Ltd. | Hollow fiber membrane module |
FR2697446B1 (en) * | 1992-11-03 | 1994-12-02 | Aquasource | Process for the treatment of a fluid containing suspended and dissolved materials, using separation membranes. |
CA2100643A1 (en) * | 1992-08-14 | 1994-02-15 | Guido Sartori | Fluorinated polyolefin membranes for aromatics/saturates separation |
US5275766A (en) * | 1992-10-30 | 1994-01-04 | Corning Incorporate | Method for making semi-permeable polymer membranes |
US5401401A (en) * | 1993-01-13 | 1995-03-28 | Aquaria Inc. | Hang on tank canister filter |
US5389260A (en) * | 1993-04-02 | 1995-02-14 | Clack Corporation | Brine seal for tubular filter |
US5297420A (en) * | 1993-05-19 | 1994-03-29 | Mobil Oil Corporation | Apparatus and method for measuring relative permeability and capillary pressure of porous rock |
US5401405A (en) * | 1993-05-24 | 1995-03-28 | Davis Water & Waste Industries, Inc. | Combined air/water backwash in a travelling bridge filter |
JP3342928B2 (en) * | 1993-09-13 | 2002-11-11 | オルガノ株式会社 | Hanging equipment for filtration equipment using hollow fiber modules |
FR2713220B1 (en) * | 1993-11-30 | 1996-03-08 | Omnium Traitement Valorisa | Installation of water purification with submerged filter membranes. |
DE4406952A1 (en) * | 1994-03-03 | 1995-09-07 | Bayer Ag | Process for concentrating paint overspray |
US5501798A (en) * | 1994-04-06 | 1996-03-26 | Zenon Environmental, Inc. | Microfiltration enhanced reverse osmosis for water treatment |
US5491023A (en) * | 1994-06-10 | 1996-02-13 | Mobil Oil Corporation | Film composition |
US5597732A (en) * | 1995-04-14 | 1997-01-28 | Bryan-Brown; Michael | Composting apparatus |
US6685832B2 (en) * | 1995-08-11 | 2004-02-03 | Zenon Environmental Inc. | Method of potting hollow fiber membranes |
US6193890B1 (en) * | 1995-08-11 | 2001-02-27 | Zenon Environmental Inc. | System for maintaining a clean skein of hollow fibers while filtering suspended solids |
DE69636130T2 (en) * | 1995-08-11 | 2006-12-07 | Zenon Environmental Inc., Oakville | Permeatsammelsystem |
US5888401A (en) * | 1996-09-16 | 1999-03-30 | Union Camp Corporation | Method and apparatus for reducing membrane fouling |
EP1736234A3 (en) * | 1996-12-20 | 2007-06-13 | Siemens Water Technologies Corp. | Method for scouring fouled membranes |
US5733456A (en) * | 1997-03-31 | 1998-03-31 | Okey; Robert W. | Environmental control for biological nutrient removal in water/wastewater treatment |
AUPO709797A0 (en) * | 1997-05-30 | 1997-06-26 | Usf Filtration And Separations Group Inc. | Predicting logarithmic reduction values |
US6354444B1 (en) * | 1997-07-01 | 2002-03-12 | Zenon Environmental Inc. | Hollow fiber membrane and braided tubular support therefor |
US5914039A (en) * | 1997-07-01 | 1999-06-22 | Zenon Environmental Inc. | Filtration membrane with calcined α-alumina particles therein |
US6641733B2 (en) * | 1998-09-25 | 2003-11-04 | U. S. Filter Wastewater Group, Inc. | Apparatus and method for cleaning membrane filtration modules |
US6017451A (en) * | 1997-10-01 | 2000-01-25 | Kopf; Henry B. | Spider fitting for multi-module filter system, and motive cart assembly comprising same |
TWI222895B (en) * | 1998-09-25 | 2004-11-01 | Usf Filtration & Separations | Apparatus and method for cleaning membrane filtration modules |
US6706189B2 (en) * | 1998-10-09 | 2004-03-16 | Zenon Environmental Inc. | Cyclic aeration system for submerged membrane modules |
US6550747B2 (en) * | 1998-10-09 | 2003-04-22 | Zenon Environmental Inc. | Cyclic aeration system for submerged membrane modules |
JP4200576B2 (en) * | 1999-02-23 | 2008-12-24 | トヨタ自動車株式会社 | Fuel cell system |
US20040007525A1 (en) * | 1999-07-30 | 2004-01-15 | Rabie Hamid R. | Maintenance cleaning for membranes |
US6589426B1 (en) * | 1999-09-29 | 2003-07-08 | Zenon Environmental Inc. | Ultrafiltration and microfiltration module and system |
US6361695B1 (en) * | 1999-10-02 | 2002-03-26 | Zenon Environmental Inc. | Shipboard wastewater treatment system |
WO2001043855A1 (en) * | 1999-12-17 | 2001-06-21 | Millipore Corporation | Spiral wound hollow fiber potting |
US6337018B1 (en) * | 2000-04-17 | 2002-01-08 | The Dow Chemical Company | Composite membrane and method for making the same |
AUPR143400A0 (en) * | 2000-11-13 | 2000-12-07 | Usf Filtration And Separations Group Inc. | Modified membranes |
US6525064B1 (en) * | 2000-12-08 | 2003-02-25 | 3M Innovative Properties Company | Sulfonamido substituted imidazopyridines |
US6702561B2 (en) * | 2001-07-12 | 2004-03-09 | Nxstage Medical, Inc. | Devices for potting a filter for blood processing |
CN1286546C (en) * | 2001-11-05 | 2006-11-29 | 旭化成株式会社 | Hollow fiber membrane module |
AUPS300602A0 (en) * | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
US6994867B1 (en) * | 2002-06-21 | 2006-02-07 | Advanced Cardiovascular Systems, Inc. | Biocompatible carrier containing L-arginine |
FR2847572B1 (en) * | 2002-11-22 | 2006-04-21 | Omnium Traitement Valorisa | METHOD OF TREATING WATER USING INORGANIC HIGH SPECIFIC SURFACE PULVERULENT REAGENT INCLUDING A RECYCLING STAGE OF SAID REAGENT |
AU2002953111A0 (en) * | 2002-12-05 | 2002-12-19 | U. S. Filter Wastewater Group, Inc. | Mixing chamber |
EP1452571B1 (en) * | 2003-02-28 | 2005-08-17 | 3M Innovative Properties Company | Fluoropolymer dispersion containing no or little low molecular weight fluorinated surfactant |
US20060081533A1 (en) * | 2004-10-16 | 2006-04-20 | Khudenko Boris M | Batch-continuous process and reactor |
US7591950B2 (en) * | 2004-11-02 | 2009-09-22 | Siemens Water Technologies Corp. | Submerged cross-flow filtration |
-
2006
- 2006-10-04 US US11/543,006 patent/US7563363B2/en active Active
- 2006-10-04 WO PCT/US2006/038664 patent/WO2007044345A2/en active Application Filing
-
2007
- 2007-12-11 US US11/954,148 patent/US20080087602A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6758972B2 (en) * | 2000-03-02 | 2004-07-06 | Luc Vriens | Method and system for sustainable treatment of municipal and industrial waste water |
US20040035770A1 (en) * | 2002-08-26 | 2004-02-26 | Edwards Haskell L. | Dynamically responsive aerobic to anoxic inter-zone flow control system for single vessel multi-zone bioreactor wastewater treatment plants |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111533246A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous denitrification accurate aeration system |
Also Published As
Publication number | Publication date |
---|---|
WO2007044345A3 (en) | 2007-11-08 |
US20070075017A1 (en) | 2007-04-05 |
US20080087602A1 (en) | 2008-04-17 |
US7563363B2 (en) | 2009-07-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7563363B2 (en) | System for treating wastewater | |
US8623202B2 (en) | Infiltration/inflow control for membrane bioreactor | |
US7455765B2 (en) | Wastewater treatment system and method | |
US7282141B2 (en) | Mixer and process controller for use in wastewater treatment processes | |
CA2622930C (en) | Dynamic control of membrane bioreactor system | |
US20240002267A1 (en) | Chemical sewage treatment and reuse system | |
JP5606513B2 (en) | Nitrogen / phosphorus removal treatment method and nitrogen / phosphorus removal treatment apparatus | |
Mohammadi et al. | Comparative study of SMBR and extended aeration activated sludge processes in the treatment of high-strength wastewaters | |
US8293098B2 (en) | Infiltration/inflow control for membrane bioreactor | |
Chen et al. | Low dissolved oxygen membrane bioreactor processes (LDO-MBRs): a review | |
CA3091820C (en) | High solids dissolved air flotation system and methods | |
JPH05154496A (en) | Controlling method for operation in anaerobic and aerobic activated sludge treating equipment | |
CN206142913U (en) | Oxidation ditch membrane bioreactor | |
CN201648185U (en) | Multistage return-flow type membrane bioreactor | |
KR100540549B1 (en) | An Apparatus for Advanced Wastewater Treatment Using Vertical Type Membrane Bio-Reactor | |
CN220745653U (en) | Integrated domestic sewage treatment device | |
KR102587787B1 (en) | Intelligent control system of mbr wastewater treatment device | |
CN115745179B (en) | Dynamic hydrolysis acidification device for high-concentration sulfate wastewater | |
US20230219833A1 (en) | Wastewater treatment systems and methods of use | |
CN213680020U (en) | Novel membrane bioreactor system | |
KR20160085048A (en) | An auto system that high density concentrate water being harmless | |
Siriweera et al. | 17 Development of MBR | |
Siriweera et al. | Development of MBR, MABR and AnMBR Systems for Wastewater Treatment | |
AU2006299746B2 (en) | Dynamic control of membrane bioreactor system | |
EA043420B1 (en) | TWO-STAGE WASTEWATER TREATMENT SYSTEM USING ANOXIDE-AEROBIC BIOFILM WITH ADJUSTABLE REACTION ZONES |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
122 | Ep: pct application non-entry in european phase |
Ref document number: 06816143 Country of ref document: EP Kind code of ref document: A2 |