CN101472847B - Electrodeionization device and method for treating water - Google Patents
Electrodeionization device and method for treating water Download PDFInfo
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- CN101472847B CN101472847B CN200780023054.8A CN200780023054A CN101472847B CN 101472847 B CN101472847 B CN 101472847B CN 200780023054 A CN200780023054 A CN 200780023054A CN 101472847 B CN101472847 B CN 101472847B
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- 238000000034 method Methods 0.000 title claims abstract description 34
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- 238000009296 electrodeionization Methods 0.000 title description 6
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- 238000011160 research Methods 0.000 description 5
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- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
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- BOKGTLAJQHTOKE-UHFFFAOYSA-N 1,5-dihydroxynaphthalene Chemical compound C1=CC=C2C(O)=CC=CC2=C1O BOKGTLAJQHTOKE-UHFFFAOYSA-N 0.000 description 1
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Abstract
Electrodeionisation devices having low scale potential as well water treatment methods using the device are disclosed. The device may have a variety of configurations related to stratified anode exchange and cathode exchange. The device may also have configuration directed to the layering of the anionic exchange resin beads and/or have at least one compartment that provides a dominating resistance resulting in a uniform current distribution throughout the apparatus. Temperature control may be provided. It is also possible to arrange for parallel liquid flow.
Description
Background of invention
1. invention field
The present invention relates to there is water treatment system and the method that low scale forms potentiality, and especially relate to the potentiality that reduces incrustation scale formation in the system that adopts electric drive separator.
2. correlation technique discussion
Electric drive separator for the treatment of water includes, but not limited to electrodialysis and electric deion equipment.Such as people such as Liang at U.S. patent No.6,649,037 a kind of electric deionizer is disclosed and by removing ionisable substance for the method for purification of fluids.
Summary of the invention
One or more aspect of the present invention relates to the electric deionizer with anode chamber and cathode chamber.This electric deionizer comprises the first consumption chamber between anode chamber and cathode chamber, with the enriched chamber that consumes chamber ionic communication, consume chamber with second of enriched chamber's ionic communication, and between at least one and with first of their ionic communication, completely cut off unit in the first consumption chamber and anode chamber and cathode chamber.
Other side of the present invention relates to a kind of electric deionizer, comprise consume chamber and with consume chamber ionic communication, and the first enriched chamber being determined by anion-selective membrane and cation selective film at least partly.The first enriched chamber comprises conventionally, comprises at least partially the firstth district that substantially comprises cation exchange medium substantially separating by Second Region and the anion-selective membrane that substantially comprises anionic exchange medium.
Other side of the present invention relates to a kind of electric deionizer, comprise and consume chamber, with the first enriched chamber that consumes chamber ionic communication, and with the second enriched chamber that consumes chamber ionic communication.The first enriched chamber comprises have the first effective resistance medium of (current resistance) conventionally, and a part for the second enriched chamber comprises the medium with the second effective resistance that is greater than the first effective resistance.
Other side of the present invention relates to a kind of electric deionizer, comprise and consume chamber, and with the enriched chamber that consumes chamber ionic communication.Enriched chamber comprises the mixture of anion exchange resin and cationic ion-exchange resin conventionally, the flow-path-length of anion exchange resin relative enriched chamber of amount in mixture with cationic ion-exchange resin and changing.
Other side of the present invention relates to a kind of electric deionizer with at least one chamber, and described chamber has at least one by the definite outlet port of the distributor with a plurality of holes.Electric deionizer can comprise ground floor particle take in the chamber that ion selective membrane is boundary.Described particle can comprise the medium having lower than undersized the first effective diameter of Kongzui.Electric deionizer further comprises second layer particle in the chamber in ground floor downstream.Second layer particle conventionally has and is greater than the first effective diameter and is greater than undersized the second effective diameter of Kongzui.
Further aspect of the present invention relates to electrodeionization system, comprises water source to be dealt with, comprises the processing components that consumes Shi He enriched chamber, and described processing components fluid is connected to water source to be dealt with; Comprise the electrolysis unit that acid generates chamber, and the fluid acid that is connected to electrolysis unit generates the saline solution source on the entrance of chamber.Electrolysis unit fluid is connected to the upstream of enriched chamber.
Some aspect of the present invention relates to a kind of electric deionizer, comprises the chamber of the mixture of anion exchange resin-containing and cationic ion-exchange resin.The average diameter of anion exchange resin is at least 1.3 times of average diameter of cationic ion-exchange resin.
Some aspect of the present invention relates to a kind of electric deionizer, comprises the chamber of the mixture of anion exchange resin-containing and cationic ion-exchange resin.The average diameter of cationic ion-exchange resin is at least 1.3 times of average diameter of anion exchange resin.
Other side of the present invention relates to a kind of water treatment system, comprise water source to be dealt with, comprise a plurality of enriched chambers and consumption chamber and fluid and be connected to the electric deion equipment on water source to be dealt with, the cooler being communicated with the hydro-thermal that will be introduced at least one enriched chamber of electric deion equipment, be configured to provide the water that will be introduced in enriched chamber and leave the sensor that at least one the temperature in the water of enriched chamber shows, and be designed to receive temperature and show and produce and promote the cooling controller that will be introduced into the signal of the water in enriched chamber.
Other side of the present invention relates to electric deionizer, comprise at least partly by cation selective film and the definite consumption chamber of anion-selective membrane, by anion-selective membrane, determined at least partly and comprise ground floor anionic exchange medium and the enriched chamber that is positioned at the second layer medium in ground floor downstream, the described second layer comprises anionic exchange medium and cation exchange medium.
Other side of the present invention relates to a kind of method of processing water in having the electric deion equipment that consumes Shi He enriched chamber.The method comprises the temperature of measuring the logistics in enriched chamber, be introduced into the temperature of the logistics in enriched chamber, and leaves one of the temperature of the logistics of enriched chamber; The temperature that will be introduced into the water in enriched chamber is reduced to predetermined temperature; Water to be dealt with is introduced and consumed chamber; With water to be dealt with from electric deion equipment, remove at least one non-required material of at least a portion.
Other side of the present invention relates to a kind of method of processing water in electric deion equipment, comprise the consumption chamber that the water with anion and cationic substance is introduced to electric deion equipment, promote at least a portion cationic substance to be transferred in the consumption chamber of electric deion equipment and the first isolated unit between cathode chamber, and promote the second isolated unit between consumption Shi He anode chamber that at least a portion anionic species is transferred at electric deion equipment.
Other side of the present invention relates to a kind of method of processing water in having the electric deion equipment that consumes Shi He enriched chamber.The method comprises the consumption chamber of water to be dealt with being introduced to electric deion equipment, promotes non-required material from consuming chamber, to be transferred to the enriched chamber of electric deion equipment.Enriched chamber can conventionally comprise ground floor anionic exchange medium and be positioned at the second layer medium in ground floor downstream, and the second layer can comprise the mixture of anionic exchange medium and cation exchange medium.
Other side of the present invention relates to a kind of method of processing water, comprises the consumption chamber of water to be dealt with being introduced to electric deion equipment, and described consumption chamber has at least one floor Ion Exchange Medium; At least a portion anionic species that is introduced into the water in consumption chamber with promotion is transferred to the first enriched chamber to generate the water with the first intermediate mass from ground floor Ion Exchange Medium.The first enriched chamber is determined by anion-selective membrane and cation selective film at least in part.The first enriched chamber comprises the firstth district that comprises cation exchange medium that Second Region by comprising anionic exchange medium separates with anion-selective membrane substantially at least in part.
Other side of the present invention relates to a kind of method of processing water in electric deion equipment.The method comprises the consumption chamber that the water to be dealt with that comprises non-required material is introduced to electric deion equipment, and the enriched chamber that promotes non-required material to transfer to electric deion equipment from consuming chamber processes water to generate; In accessory part, electrolysis produces acid solution, and at least a portion acid solution is introduced to enriched chamber.
Other side of the present invention relates to a kind of water treatment system, comprises water source to be dealt with, and comprises that the first consumption chamber and second consumes the electric deion equipment of chamber, and first and second consume chamber is connected on water source to be dealt with PARALLEL FLOW configuration fluid respectively; With the first enriched chamber with the first consumption chamber ionic communication, and fluid is connected to second enriched chamber in the first downstream, enriched chamber.
Other side of the present invention relates to electric deionizer, comprise being a plurality ofly designed to make liquid therein along the mobile consumption chamber of parallel flow paths, and a plurality of and at least one consume the enriched chamber of chamber ionic communication, wherein arrange in turn enriched chamber at least partly.
Accompanying drawing is briefly described
Accompanying drawing has no intention to draw in proportion.In the accompanying drawings, each the identical or almost identical element showing in each figure represents by same numbers.For clarity sake, be not each element all can be in each accompanying drawing mark.
In the accompanying drawings:
Fig. 1 illustrates explanation according to a part for the electric deionizer that comprises at least one isolated unit of one or more embodiments of the invention;
Fig. 2 illustrates explanation according to one or more embodiments of the invention, has a part for the media bed electric deionizer of stratification in its at least one enriched chamber;
Fig. 3 illustrates explanation according to one or more embodiments of the invention, comprises a part for the electric deionizer of the enriched chamber that at least one has dielectric area;
Fig. 4 illustrates explanation according to a part for the system for handling of one or more embodiments of the invention;
Fig. 5 illustrates explanation according to a part for the electric deionizer of one or more embodiments of the invention, and it has at least one and is changed the chamber to reduce effective resistance (resistance) or improve flow point cloth (current distribution) in other chamber;
Fig. 6 illustrates explanation according to a part for the electric deionizer of one or more embodiments of the invention, and it has the effective liquidate speed of increase in its at least one enriched chamber;
Fig. 7 A and 7B signal explanation, according to a part for the electric deionizer of one or more embodiments of the invention, comprise the chamber that comprises the resin beads with different size; With
Fig. 8 shows the relation of the relative water flow temperature of Langelier saturation index value of current;
Fig. 9 A and 9B signal explanation are according to the concentrated and consumption chamber unit pair in the electric deion equipment of one or more embodiments of the invention, and the chamber that wherein Fig. 9 A shows comprises dielectric layer, and the chamber that Fig. 9 B shows comprises medium Ceng He district; With
Figure 10 shows according to the performance of the electric deionizer of one or more embodiments of the invention.
Describe in detail
The invention provides electric drive separator, such as but not limited to filled chamber electrodeionization (CEDI) equipment, as being for example disclosed in U.S. patent 4,632,745,6,649,037,6,824,662 and 7,083, those of 733.Especially, the embodiment that realizes one or more aspects of the present invention can be characterised in that to have lower potentiality or the lower possibility that forms incrustation scale in some cases.Although each aspect of the present invention presents by comprising the embodiment of electric deion equipment, these aspects of the present invention can be implemented can contribute to process in having other electric drive of fluid of at least one non-required material or the separator of driving.Especially, related fields of the present invention can comprise for process or remove the electric deionizer of at least one dissolved substance from current or water body.Therefore, each aspect of the present invention can advantageously provide the electric deionizer that is constructed or operates to process the water with high incrustation scale potentiality.
One aspect of the present invention can be implemented in the exemplary shown in Fig. 1, wherein schematically shows a part for electric deionizer 100.This electric deionizer generally includes at least one enriched chamber 112 and at least one consumes chamber 114, and their Component units are to 115 and ionic communication mutually, and preferably with anode chamber 120 and cathode chamber 122 ionic communication be positioned between the two.In favourable embodiment of the present invention, this electric deionizer can further comprise that at least one can trap the isolated unit 130 of migration material.For example, electric deionizer 100 can have the isolated or temporary location (neutral cell) 130 and 132 adjacent to anode chamber 120 and cathode chamber 122.Isolated unit is generally electrode chamber and provides buffering area with isolation or prevent that material from forming local incrustation scale.Electric deionizer produces hydroxide ion conventionally, can be in localized areas, and pH especially raises on the point that cell reaction is conducted electricity or surface.These localized areas, or even at electrode chamber place, conventionally there is the pH condition that is obviously greater than fluid bulk.Because isolated unit is used in the process of processing water, these high pH regions are separated with the dirt material that becomes from the transmission of one or more consumption chamber, thereby suppress or at least reduce the potentiality of incrustation scale formation.As Fig. 1 exemplary illustration, electric deionizer 100 can comprise isolated unit 130, and it is by least one precipitable component, as Ca
2+, with the component that contributes to incrustation scale formation, as OH
-ion, separation.Conventionally, one or more isolated unit 130 can be at least in part by allowing anionic species as OH
-migration also suppresses cationic substance simultaneously and further moves to the anion-selective membrane 140A restriction in adjacent chamber.According to shown in, isolated unit 130 can arrange adjacent to enriched chamber 112.One or more these isolated unit also can further partly be limited by cation selective film 140C.Like this, for example, can suppress the component of precipitable compound, as Ca
2+, enter the chamber conventionally because hydroxide material generates with high pH regional area, as electrode chamber 120.
Other embodiment of the present invention can comprise separate neutrality or light current from or ionisable substance at least, as, but be not limited to silica, SiO
2isolated unit.Silica can precipitate from bulk liquid, if concentration is enough high or pH wherein occurs change, when changed to neutral pH from high pH.In electric deionizer, silica, conventionally in its state of ionization, is removed under high pH.One or more isolated unit 132 can be set with the anode chamber 122 of ion isolation electric deionizer 100, wherein generate hydrogen ion and therefore can there is therein low or neutral pH liquid flow.At silica by anion-selective membrane 140A from consuming after chamber 114 moves to enriched chamber 112, catch with suppressed further moving to the isolated unit 132 that it is comprised high pH liquid flow therein has in the low of neutrality or near-neutral pH or neutral pH chamber, thereby reduces the possibility that aggregates into silica incrustation scale.Unit 132, as unit 130, can be limited by cation selective film 140C and anion-selective membrane 140A at least in part.Isolated unit 132 can be therefore for trapping pH-settleable matter and the precipitation that prevents or at least suppress these materials.Isolated unit 132 also can comprise anionic exchange medium and cation exchange medium or both mixtures at least in part.In addition, one or more isolated unit can further comprise and can contribute to the assembling of electric deionizer or in for example installing operating process, provide desirable characteristic as the inert media of resistance or flow distribution or other filler material.Equally, the one or more mixtures that can comprise at least in part anion and cation exchange medium in enriched chamber, consumption chamber and electrode chamber.Really, anion in enriched chamber and electrode chamber and the mixture of cation exchange medium can be by promoting settleable matter transmission to leave selective membrane and further reduce fouling potentiality, and this has been avoided the gathering of contingent ionic species in the Huo Shi region, chamber of using the active exchange media of single kind.
In some embodiments of the present invention, anode chamber can comprise the medium being substantially comprised of resistance to oxidation base material at least in part.Therefore, for example, the highly cross-linked ion exchange resin of durability, as commercially available resin cation, can be used for wherein can existing the anode chamber of oxidation environment.In addition, cationic ion-exchange resin can prevent or suppress chlorion and transfer to anode surface when for anode chamber, and these materials can be converted to oxidisability chlorine at anode surface.
Apparatus of the present invention can be processed hardness and be greater than 1mg/L (with CaCO
3meter) and/or silica content be greater than the water of 1mg/L or both.Therefore, device of the present invention and technology are not limited to routine operation restriction, if for the treatment of system, can save the unit operations that at least one is intended to softening water to be dealt with or removes silica.This advantageously can reduce capital and running cost, improves reliabilty and availability and the capacity of system for handling simultaneously.For example, the system for handling of the present invention that comprises one or more electric deion equipments described herein can be processed water without round trip counter-infiltration (RO) subsystem, causes the system of the component of hardness and the concentration of silica to compare simultaneously the water with identical or nominal mass is provided with employing round trip RO equipment with removal before electric deion equipment or reduction.
Other side of the present invention can comprise electric deionizer, and it comprises that at least one consumes chamber and/or at least one wherein comprises the enriched chamber of stratification medium.For example, one or more consumption chamber 112 of electric deion equipment 100 can comprise the first stratum granulosum 112A, and it includes at least partly and helps first object, the normally transmission of ionization material or the active medium of migration.Consume chamber 112 and can further comprise second layer 112B, it includes the active medium that helps first object material and the second target substance or both transmission at least in part.Ground floor 112A can comprise the particle with the first effective diameter, and second layer 112B can have the particle of the second effective diameter.Further embodiment can be included in the 3rd floor 112C consuming in chamber 112.The 3rd layer of 112C can have activity or inert media, or both mixtures, and this medium has the 3rd effective diameter.Effective diameter can be the minimum dimension of particle.Or effective diameter can be the average diameter of all particles and be the calculated diameter with the similar ball of comparable volume and surface area.For example, the effective diameter of the particle in layer can be the function of ratio of particle volume and granule surface area or the mean value of the minimum dimension of particle.In preferred configuration, the effective diameter of the particle in downstream layer is lower than the effective diameter of the particle in upstream layer.For example, the particle of constituting layer 112C can be spheric granules, and its effective diameter is greater than the effective diameter of the particle of constituting layer 112B.Optionally, the effective diameter of the particle of constituting layer 112A can be greater than the effective diameter of the particle in layer 112B or 112C.One or more enriched chambers can be by similar stratification.
In a preferred embodiment, the effective diameter of the particle in upstream layer is at least the size in gap between downstream layer particle.In other embodiment, the effective diameter of upstream particle or minimum dimension are lower than the minimum dimension of determining the hole of the distributor 160 that consumes chamber 112 outlet ports.Distributor 160 can be for medium being retained in to indoor screen cloth.Therefore, the consumption Shi He enriched chamber that comprises medium can have at least one distributor respectively, and fluid is therefrom flow through, and retains the dielectric layer that medium and its size are retained the particle in upstream layer simultaneously.
Conventionally the hole of design distributor or opening have diameter 500 μ m to the resin of approximately 700 μ m to retain.Adopt configuration of the present invention, can use size be less than anion and the cationic ion-exchange resin of hole dimension, mass transfer dynamics when this has improved through this device.In addition, compared with small ion exchanger resin, can improve in indoor filling and reduce along locular wall channelizing or the mobile possibility of bypass.The clearance space of closelypacked ball or almost spheric granules is approximately 0.414 times of the radius of a ball.Therefore, the effective diameter of upstream resin is preferably not less than this size.For example, effective diameter approximately 62 μ m can be used for having approximately 300 μ m to the upstream layer of the layer of the resin beads of approximately 400 μ m diameters to the fine mesh resin beads of approximately 83 μ m.Any floor can account for any suitable mark of chamber.Providing of desired properties is provided the degree of depth of upstream layer.In addition, favourable configuration is considered and will be had the resin cation bead of less effective diameter or size and together with macroanion resin beads, use to contribute to cation transport active.Noticeable arrangement is not limited to use reactive resin as the downstream media of below, and the present invention can adopt inert media and implement in one or more downstream layers.
Interface between layer can form the gradient of little and large resin beads.Therefore, the border between layer is without describing especially.In addition, other configuration can comprise the mixture of fine mesh resin beads and larger resin.
Another aspect of the present invention can comprise electric deionizer, and it comprises that at least one wherein comprises the enriched chamber of stratification medium.As shown in Figure 2, electric deion equipment 200 can have at least one enriched chamber 214 and at least one consumption chamber 212.At least one enriched chamber 214 can have ground floor 215 and the second layer 216.Processing relatively pure water, as RO penetrant, electric deion equipment in, current efficiency is usually less than 100%, this it is believed that it is because water splitting and the hydrogen generating and the transmission of hydroxyl ion.This can produce local pH fluctuation and can promote incrustation scale to form, thereby especially at hydroxylated material and bicarbonate radical material or carbon dioxide reaction, forms the place of carbanion formation lime scale.
For example, in typical electrical deionizer, bicarbonate ion shifts by the anion-exchange membrane near chamber inlet, but can suppressed further migration from film.If generation water splitting, transmission can form carbonate with bicarbonate radical substance reaction by the hydroxylated material of anion-exchange membrane, and carbonate reacts with calcium subsequently and forms lime scale.
By adopt layer in one or more enriched chambers, target substance can be directed to that wherein they not too easily form the place of incrustation scale.As shown in Figure 2, the layer 215 of anionic exchange medium can be placed in around the entrance of enriched chamber 214, to promote the migration of bicarbonate radical material.In bicarbonate radical mass transfer, by after anion-exchange membrane 240A, it is promoted by the resin anion (R.A.) of layer 215 and shifts to cation selective film 240C.Even if there is hardness ions to pass through cation selective film 240C, the pH of this film fluid is around also relatively low, and this has reduced the possibility that forms carbonate.
Other one or more layers 216 that consume Shi212He enriched chamber 214 can comprise anion exchange and the cation exchange medium of mixing.
In order further to reduce or to suppress incrustation scale, form, dielectric layer can be along the flow-path-length setting of enriched chamber.As shown in Figure 3, one or more upgrading units can comprise the first district 314A of Ion Exchange Medium and the Second Region 314B of Ion Exchange Medium at least in part.The first and secondth district can be maybe along the length linear distribution (as represented in border 350) of chamber the increasing or decreasing amount in district 315C and 315D various Ion Exchange Mediums gradient and by gradient boundaries 351, described.First or Second Region can comprise anionic exchange medium or cation exchange medium, by or substantially by anionic exchange medium or cation exchange medium, formed.For example, district 314A can comprise cation exchange medium so that the district 314B that comprises anionic exchange medium and cation selective film 340C substantial barrier.Substantial barrier refers to, in some cases, between district and film, so that the medium that isolated area comprises certain type or consist of the medium of certain type, this medium can be anion, cation or inertia.
In some cases, the firstth district or Second Region can be the mixtures of the various Ion Exchange Mediums of different amounts.For example, district 315C can comprise the cation exchange medium adjacent to cation selective film 340C, by or substantially by this medium, formed, district 315D can comprise anionic exchange medium, by or substantially by this medium, formed, wherein the amount of the relative cation exchange medium of amount of anionic exchange medium increases or declines along flow-path-length or lengthwise dimension, and the border between district is determined by gradient boundaries 351.In another embodiment, the 3rd dielectric area (not shown) can be between the first and secondth district.San district can comprise inert media, cation exchange medium, anionic exchange medium, blending agent or its mixture, or by or substantially by above-mentioned medium, formed.In addition, between one or more screen cloth Ke district, in Huo district, use to contribute to fill the chamber of this device, this also can improve flow distribution and further suppress incrustation scale and form in operating process.By the medium that adopts binding agent to fix each district, also can be conducive to assembling and fill.For example, the medium in the firstth district can mix as starch with water-soluble binder.Mixture can be placed in chamber subsequently.The second mixture of the medium of Second Region can similar preparation and is arranged in chamber.
District 314B contributes to anionic species, and as bicarbonate ion, anion-selective membrane 340A is left in transmission, and district 315C contributes to cationic substance, and as calcium ion, anion-selective membrane 340C is left in transmission.Therefore these isolated areas are reduced in the film surface possibility that incrustation scale forms around.
As shown in Figure 3, consume chamber and can comprise first medium floor 312A, second medium layer 312B, and, optionally, the 3rd dielectric layer 312C.Ground floor can comprise the mixture of anionic exchange medium, cation exchange medium or inert media.The second layer can comprise anionic exchange medium or inert media or its mixture consisting of or consisting essentially of.The 3rd layer can comprise anionic exchange medium, cation exchange medium, inert media or its mixture consisting of or consisting essentially of.
Other side of the present invention comprises system and the technology that changes the pH of mobile logistics at least one enriched chamber of electric deionizer.The pH of logistics can be by producing and adding acid solution to be lowered in one or more concentrates and electrode chamber, the possibility forming to reduce incrustation scale.Acid solution can be by adopting electrolysis unit produce or prepare.Further, incrustation scale inhibition or tolerance can realize by the degassed of concentrate liquid.Can use any sour generation component, as can be purchased from those of the Dionex company of California Sunnyvale.
Conventionally, electric deion equipment can be processed the liquid with soft.This restriction is limited to 1ppm or lower firmness level by the feed water that is fed to electric deion equipment, in calcium carbonate.In order to process hardness number, be greater than the water of 1ppm, must use pretreating process as round trip RO or RO after-tack agent.Additional pretreatment unit operation increases system complexity and cost and refuse.But electric deion equipment of the present invention can reliably be located in the water that reason has higher hardness, thereby eliminate or the dependence of reduction to these pretreatment operation.
The known enriched chamber of electrodialysis plant that acid solution is added is to reduce calcium precipitate; But in fact acid solution is not added to electric deion equipment, because the logistics flow velocity in concentrate chamber, especially thick element cell is low.In addition, conventionally need the acid of a large amount.As shown in Figure 4, system for handling 400 of the present invention can comprise that electrochemical apparatus 435 generates to be introduced into and is arranged to from source 411 and receives the chamber of the electric deion equipment 445 of water to be dealt with, the acid solution of enriched chamber 414 normally.A part for the treatment of product water from electric deion equipment 445 can be used for promoting to produce acid solution in the acid of electrochemical apparatus 435 generates chamber 472.At least a portion is processed water can be transferred into use point 413.Source 462 from the saline solution that comprises salt of for example softening agent brine tank can be introduced into electrolysis unit 435 to promote acid solution to generate.Electrochemical apparatus 435 can be a part for electric deion equipment 445.Saline solution comprises sodium chloride conventionally.
In some cases, acid solution can be introduced into one or more consumption of electric deion equipment 445 and enriched chamber 412 and 414 and electrode chamber.Preferably, the pH of the logistics solution of leaving away that the addition of acid solution makes to leave described chamber is between about 2.5Zhi4.3Ge unit.Further embodiment can comprise that neutralization is from one or more logistics of electric deion equipment 445.The alkaline solution for example being generated by the chamber 472 of electrolysis unit 435 can merged Yi Zhonghe enriched chamber 414 the outlet logistics conventionally with low pH, be then disposed to floss hole 463 or environment.
For removing the degassed precipitation potentiality that can further reduce or eliminate enriched chamber of concentrate logistics of carbon dioxide.Degassed can be by adding degassing equipment or realizing by membrane process or other method.If adopt acid solution in enriched chamber, degassed can being correlated with, can be to returning the carbon dioxide that diffuses through film and reduce product quality because likely form.In addition, logistics flowing in chamber can be adverse current to contribute to gas to remove.
Use pump and optionally use tank to recycle concentrate chamber and can further strengthen incrustation scale inhibitory action by acidifying as herein described and Degassing Technology.
Element of the present invention, setting and technology also provide improved CURRENT DISTRIBUTION in electric deion equipment.As Fig. 5 illustrates explanation, resistance by electric deionizer 500 between electrode 520 and 522 can be characterized by a series of chambers resistance 573,575 and 577, their representatives consume and enriched chamber 512 and 514, with be characterized by film resistance 584,586 and 588, they represent anion-selective membrane 540A and cation selective film 540B.The improved CURRENT DISTRIBUTION that runs through electric deionizer 500 can realize by the enriched chamber 516 that adopts at least one its at least part of effective resistance 580 to be greater than the effective resistance of other Shi Ru enriched chamber.
The effective resistance of chamber or its part can change by mixed inert resin beads in enriched chamber or low conduction or non-conducting material.Optionally increasing effective resistance has realized by the more uniform CURRENT DISTRIBUTION of other chamber.The variation that minimizing runs through the electric current that consumes chamber for example can improve overall performance.
In electric deion equipment, resistance can be depending on the kind of the medium in this equipment and the activity chemistry form of these media, that is, which kind of ion is just moving through medium.In stratification bed chamber, resistance changes conventionally between different layers, because the kind of resin is different with the form of resin.Conventionally, strong band isoelectric substance or ion are excited, and water splitting phenomenon and weak ion propulsion occur subsequently.Therefore, near the dielectric resin of the entrance of chamber can with reinforced water in target substance exchange, and be hydrogen and hydroxide form near the medium great majority of outlet.Conventionally, most of strong band electron ion must be removed, if if reinforced concentration and/or mobile enough height or electric current are enough low, this may not can realize.
If the resistance in chamber can the floor in chamber between or along the length of implantation, change, therefore current density also can change so.But the resistance by whole assembly may not only depend on the resistance that consumes chamber.Consume chamber with film and can or also can along enriched chamber and the electrode chamber electricity of its length generation resistance change, not connect.If consuming the resistance of chamber is by the sub-fraction of the all-in resistance of assembly, even so this resistance marked change, all-in resistance can be more even by other factors decision and CURRENT DISTRIBUTION.If to compare other resistance high but consume chamber resistance, CURRENT DISTRIBUTION is subject to consuming the impact of indoor resistance difference.
Typical electrical deionization apparatus is combined with the concentrated and/or electrode chamber that screen cloth is filled.In these configurations, the resistance of water in these chambers is in most of the cases obviously greater than the resistance of resin in consuming chamber, and therefore, CURRENT DISTRIBUTION is not generally consumed the control of the resistance of chamber.With resin filling is concentrated, compared with low resistance amberplex, obviously reduce overall assembly resistance with electrode chamber and use.But in some cases, this can cause inhomogeneous CURRENT DISTRIBUTION, because serving as reasons, electrical component resistive consumes the resistance decision of chamber.
Therefore the concentrated and electrode chamber that in some embodiments of the present invention, screen cloth is filled can be tried one's best and at utmost be reduced inhomogeneous CURRENT DISTRIBUTION.But in application, glassware for drinking water has low-down conductance, causes high assembly resistance after most of RO.This high resistance further produces restriction, if there is electromotive force limitation.On the contrary, the present invention provides suitable performance without salt solution is injected to the logistics of inflow enriched chamber, reduces like this running cost and process complexity.
Can notice, in one or more concentrated and/or electrode chambers, mixed inert resin can be increased in the resistance in these chambers as filler, has improved like this CURRENT DISTRIBUTION by assembly.As shown in Figure 5, one or more enriched chambers 516 can comprise inert plastic so that the higher effective resistance 580 therefrom passing through to be provided, and this has determined the set resistance of other chamber and film.Because dominant resistance is controlled all-in resistance rate, the effective current by other chamber distributes and becomes more even.The amount of inert plastic can be changed to increase effective resistance and change by the CURRENT DISTRIBUTION of this device.Inert plastic also can be used for layer in one or more concentrated and electrode chambers to be increased and wherein dilutes resistance and be confirmed as the resistance in some low part with part.Therefore, as shown in Figure 5, by the CURRENT DISTRIBUTION in district 512, can mate or make it to be equivalent to by the electric current in the district 511 of device by adopting higher electric resistivity floor that the effective resistance 573 of the floor of chamber 515 is increased in chamber 515.The amount of resistance can be determined by measuring the effective resistance of relative inertness resin demand in experience.
Other material with low conductivity, as polymer mesh or fibrous material, can be used for increasing along the resistance with inert plastic bead.
Electric deionizer can be restricted to the rate of recovery of maximum 90-95% in case the limited solubility material in reinforced water forms incrustation scale as hardness and silica.If these materials that reinforced water comprises very low amount, this equipment should be able to operate under higher recovery.Some aspect of the present invention comprises electric deionizer, and it has a plurality of by the approach of its enriched chamber, thereby the rate of recovery is provided.The speed that multipass configuration contributes to keep predetermined and without recirculation pump and loop.But the present invention can be preferred for having the occasion of recirculation circuit, the water concentration that wherein feeds in raw material is low and need the very high rate of recovery in order to avoid waste or discharge high-purity water and/or increase supplement the operating time of system.In some embodiments of electric deionizer of the present invention, rate of flow of fluid is enough to reduce to produce dead volume, channelizing and in the possibility of indoor hot-spot.For example, the required rate of flow of fluid in chamber can Shi enriched chamber at least about 2 gallon per minute/square feet (162.8 liters/min/square metre).Other rate of flow of fluid can be depending on other factors, includes but not limited to precipitate the concentration of the component of compound, the temperature of fluid, and the pH of fluid.Compared with low rate, can induce channelizing.
Fig. 6 illustrates to illustrate a part for electric deionizer 600, is included in the consumption Shi614He enriched chamber 612 between electrode chamber 630 and 632.This arrangement and configuration provide one to consume chamber by way of a plurality of enriched chambers approach with relevant in treating apparatus of the present invention and system.These configurations make to be increased in the rate of flow of fluid in enriched chamber, preferably 5 times of the highest flow velocity that is increased to one way equipment.As shown in Figure 6, the water in source 615 is sequentially introduced enriched chamber 612 with guiding downstream concentration chamber 612B and subsequently to chamber 612C with to floss hole or to downstream unit operations 625.
Water to be dealt with is introduced into and consumes that chamber 614 and guiding are used point and without following or follow the trail of flowing of water by chamber 612,612A and 612B.But the present invention does not limit with respect to the relevant enriched chamber volume number that consumes chamber volume number, enriched chamber can be used for providing the required high rate of flow of fluid by chamber with any ratio that consumes chamber.
Different sized cation in mixed layer or chamber and anion exchange resin beads can be used for further reducing compared with the transfer rate of macrobead counter ion counterionsl gegenions and contribute to transmission compared with beads counter ion counterionsl gegenions.
Ion transfer occurs by ion exchange resin conventionally.Successfully therefore transmission can depend on the All Paths of the similar substance between bead and film.Cationic substance is diffused on resin cation bead conventionally and negative electrode is shifted in the path of often following cationic medium, until its arrives cation selective film and passes into enriched chamber.If interrupt in path, cationic substance must diffuse out and enter bulk solution from last bead, and it appears the chance of (end up) in the chance of in bed, it having been picked up after therefore having reduced and increase in product water.This path can make bead not have good contact and interrupt because of filling is bad, or it can interrupt because of bead oppositely charged.
Use relatively thin unit or tight potting resin can increase the possibility that keeps desired path.Cation and anion exchange resin that employing has the relative uniform-dimension of class Sihe also increase the possibility that keeps desired path.But use cation and the anion exchange resin transfer capable of blocking of different size.
In some cases, can advantageously suppress the transmission of cation or anion.By optionally reducing the size of a kind of type of resin in mixed bed, compared with the transfer of beads counter ion counterionsl gegenions because path is more completely enhanced, and compared with the transfer of macrobead counter ion counterionsl gegenions because path not too is completely delayed, because along with approaching compared with a certain mark of the size of macrobead compared with the size of beads, less resin beads is often filled in compared with around macrobead, and this separation and interruption are from a macrobead to Next path.This phenomenon also can be depending on the relative ratios of large and small ion exchanger resin bead.For example, the mixture of 50 volume % beads is obviously different from the mixture of 25 volume % or 75 volume % beads on the impact of ion transfer.
The transmission of target or selected type ion and increase different types of transmission once the size of medium and blending ratio are selected to slow down suitably, hydrogen or hydroxyl ion must be transferred to keep electroneutral.For example, if the bed substantially being formed by resin cation for consumption chamber as shown in Figure 7 A, cationic substance can move by cation exchange resin beads grain 731 and cationic membrane 740C and enter adjacent enriched chamber.Water can split in 766 punishment of the position of anion-selective membrane 740A, produces hydrogen ion and to move to adjacent enriched chamber's neutralization, from another, consumes the cationic substance migration of chamber (not shown) to substitute the migration cation consuming in chamber and to produce hydroxyl ion.This phenomenon depends on the ability that divides water on the surface of anionic membrane, has the contact area between less anionic membrane and cation bead herein.Employing, compared with small cation exchanger resin bead 733 and compared with macroanion exchanger resin bead 734, as shown in Figure 7 B, has reduced the transfer rate of anionic species.In addition, the use of different resins bead size provides additional water splitting position 766 on the tangent line between cationic ion-exchange resin 733 and anion exchange resin beads 734, and this improves performance by the resistance reducing by assembly again.
For example, electric deionizer of the present invention can comprise the chamber of the mixture of anion exchange resin-containing and cationic ion-exchange resin, at least 1.3 times of the average diameter that the average diameter of described cationic ion-exchange resin is anion exchange resin.Or or in addition, electric deionizer can comprise the chamber of the mixture of anion exchange resin-containing and cationic ion-exchange resin, at least 1.3 times of the average diameter that the average diameter of described cationic ion-exchange resin is anion exchange resin.
Embodiment
The function of these and other embodiment of the present invention and advantage can further be understood according to following examples, and these embodiment illustrate the benefit of the one or more systems of the present invention and technology and/or advantage but do not exemplify four corner of the present invention.
Embodiment 1
This embodiment describes the impact of temperature on Langelier saturation index (LSI).
The potentiality that calculating LSI value known in the art forms for measuring incrustation scale.LSI is pH, total dissolved solidss (TDS), temperature, total hardness (TH), and the function of basicity.For these parameters of enriched chamber's logistics of electric deionizer, use following assessment, the stream temperature of LSI value can be determined with representative relationship and be provided in Fig. 8 relatively, based on thering is pH9.5 unit, and TDS 30ppm, TH 15ppm, with CaCO
3meter, and the about 25ppm of basicity, with CaCO
3the logistics of meter.
If the LSI value of logistics is positive, often there is fouling.In order to suppress fouling, the LSI value of logistics is reduced to and is preferably negative value.Fig. 8 demonstration, along with temperature declines, LSI value is brought down below zero 12.5 ℃ of left and right.Therefore,, for above-mentioned condition, the logistics that enters the enriched chamber of electric deion equipment is cooled to the possibility that should be able to reduce or prevent from forming incrustation scale lower than 12.5 ℃.
Cooling can being undertaken by upstream heat coupling heat exchanger or the cooler at electric deionizer.Can use other element and the subsystem that contribute to remove heat energy from enter one or more logistics of this device.For example, one or more sensors and controller can be used for definite temperature control loop and impel stream temperature is retained to target temperature or even effective LSI value is down to required or aim parameter.
Target temperature can empirically determine by determining the temperature of the logistics will be introduced into electric deion equipment enriched chamber, or the LSI value based on calculating and calculating at least in part.For example, the target temperature that experience is established can be in the situation that being with or without other border, in history, not observe the temperature of fouling to guarantee that fouling is further suppressed.LSI base target temperature can be based on derivative LSI-temperature relation and determine, calculate subsequently and the setting of the LSI value relevant target temperature that declines.
Embodiment 2
In this embodiment, research resin beads size is on according to the impact of the performance of the electric deionizer of one or more aspects of the present invention.
In a test, electrodeionization assembly by being used the equal portions mixture of the resin anion (R.A.) of average bead diameter 575 μ m and the resin cation of average bead diameter 350 μ m to build in consuming chamber.These resins all have the single-size size according to industrial standard.
Assembly is added into prior by reverse-osmosis treated with comprise about 0.5ppm Mg and 1.5ppm Ca (all with CaCO
3meter) and the water of pH approximately 6.1.Assembly is almost operating under 100% current efficiency, and product quality is about 1-2M Ω-cm, does not have almost zero silica to remove.
Product water firmness level is reduced to approximately 5.7 lower than the detected value and the pH that measure by Hach spectrophotometer (<10ppb).This shows, this assembly is just preferentially removed cation but not anion.
Embodiment 3
In this embodiment, research impact on performance according to which floor the electric deionizer in the one or more aspect Qi of the present invention chamber with different bead size.
Assembly by being used three leafing sub-exchange resins to build in consuming chamber.First and final layer by thering is single-size diameter 600 cations of μ m and the homogeneous mixture of resin anion (R.A.), form.Intermediate layer forms by having the cation exchange of particle diameter 150-300 μ m and the homogeneous mixture of anion exchange resin.Assembly partition has the slit in fluidic distributor, and for resin is in position, its width is 254 μ m.Assembly operates some months in the situation that not changing pressure drop, shows in intermediate layer some resins that are less than partition hole not by resin bottom and leaves assembly.
In addition, adding of the intermediate layer of less resin improved suitable electric deion equipment, contrast assembly, performance.This assembly and another electrodeionization assembly operation repetitive, the chamber of a rear assembly comprises particle diameter approximately 600 cation exchange of μ m and the homogeneous mixture of anion exchange resin.Use thering are conductance approximately 30 μ S/cm and comprising 3.75ppm CO by reverse-osmosis treated in advance
2reinforced water, comprise the water that generates resistivity 16.4M Ω-cm compared with the assembly of the layer of small ion exchanger resin, compared with another typical components of the layer of small ion exchanger resin, do not generate the water of resistivity 13.5M Ω-cm.In addition, the assembly of the layer that comprises less exchanger resin demonstrates 96.6% silica removal, and contrast assembly is 93.2%.
Embodiment 4
In this embodiment, research impact on performance with the electric deionizer of the several or a plurality of strokes by its enriched chamber.
Electrodeionization assembly consumes chamber by four, San Ge enriched chamber, and two electrode chamber assemblings.
Fed in raw material in parallel to each other with water to be dealt with in all consumption chambers.
Enriched chamber and electrode chamber are connected reinforced makes the logistics that is introduced into enriched chamber first enter cathode chamber, and sequential flowing is by enriched chamber with finally pass through anode chamber subsequently.This is different from conventional configuration, and wherein current are fed to electrode chamber conventionally, and current enter enriched chamber simultaneously.Therefore assembly has five effective enriched chamber approach.
The performance data (being designated as the parallel concentrate ＂ of ＂) of the standard package of the data of this assembly (being designated as ＂ series concentrate ＂) and the operation of use PARALLEL FLOW is listed in following table 1.Data show, by order, logistics are set to flow through concentrated and electrode chamber, when rate of flow of fluid is similar to the operation under obviously lower defective flow velocity.Therefore can in concentrate, keep minimum speed to obtain the very high rate of recovery simultaneously.
Table 1 has the assembly and the comparison with the assembly of five strokes of one way concentrate.
| Assembly | Parallel concentrate | Series concentrate |
| Reinforced, μ S/cm | 30.3 | 30.3 |
| Resistance, ohm | 4.3 | 4.2 |
| Product quality, M Ω-cm | 3.1 | 3.6 |
| Product flows, gpm | 2.25 | 2.25 |
| Concentrate flows, gpm | 7.2 | 1.2 |
| The rate of recovery, % | 94.9 | 99.1 |
| Concentrate speed, gpm/ft 2 | 2.0 | 1.7 |
Embodiment 5
In this embodiment, the impact on performance with the electric deionizer of horizontal and vertical layer in research enriched chamber.
Two assemblies are used the different layer configuration assembling as shown in Fig. 9 A and 9B.Each assembly by four repetitives that illustrated respectively to forming.In the drawings, ＂ MB ＂ refers to mixture or resin; ＂ A ＂ and ＂ C ＂ refer to respectively district or the floor that comprises anion exchange resin and cationic ion-exchange resin; ＂ AEM ＂ and ＂ CEM ＂ refer to anion-selective membrane and cation selective film.Assembly is used respectively the reinforced water that has conductance approximately 10 μ S/cm and comprise 2ppm total hardness (in calcium carbonate) to operate 2 and 3 weeks.
After this time, they are opened, do not observe incrustation scale.After identical reinforced water operates 2 weeks, on the anionic membrane in concentrate, there is incrustation scale in the non-stratification assembly that on the contrary, comprises mixed bed resin in consumption and enriched chamber.
Embodiment 6
In this embodiment, research in its chamber with perpendicular layers and be added with the impact of the electric deionizer of acid solution on performance.
Three assemblies are assembled in enriched chamber, to have in horizontal stratification He enriched chamber has vertical orientated district or floor along flow-path-length.Isolated unit is set in addition adjacent to two electrode chambers.After assembly is used the RO that comprises about 2ppm total hardness, reinforced water operates 90 days.Acid solution is injected to enriched chamber, and the pH that charge velocity makes to leave the current of enriched chamber is about 2.5-3.5.
Figure 10 has provided stable performance in whole 90 days.In the drawings, ＂ FCE ＂ refers to reinforced conductance equivalent, its by the reinforced conductance of reality (μ S/cm) is added reinforced carbon dioxide (ppm) be multiplied by 2.67 and reinforced silica (ppm) be multiplied by 1.94 and calculate; The reinforced TH ＂ of ＂ refers to reinforced total hardness.
The controller of system of the present invention can use one or more computer architectures and realize.Computer architecture can be, for example, all-purpose computer is as based on Intel
type processor, Motorola
processor, Sun
processor, Hewlett-Packard
processor, or those of any other type processor or its combination.Or computer architecture can comprise the specific use hardware of separate procedure, for example, application specific type integrated circuit (ASIC) or expection are for the controller of analysis system.
Computer architecture can comprise the one or more processors that are conventionally connected on one or more holder equipment, and it can comprise, for example, any or multiple disc driver internal memory, flash memories equipment, RAM holder equipment, or for the miscellaneous equipment of storage data.Holder is usually used in stored routine and data in system for handling and/or computer architecture operating process.Software, comprises the programming code of implementing embodiment of the present invention, can be stored in computer-readable and/or can write on nonvolatile recording medium, and being conventionally copied to subsequently in holder, and wherein it can be executed by processor subsequently.The element of computer architecture can connect by interconnection mechanism, and it can comprise one or more buses (as being integrated between the element in same equipment) and/or network (between the element in different discrete device).Interconnection mechanism conventionally can make exchange message between the element of computer architecture (as, data, instruction).Computer architecture also can comprise one or more input equipments, keyboard for example, and mouse, cursor ball, microphone, touch screen, and one or more output equipment, for example, printing equipment, display screen, or loudspeaker.In addition, computer architecture can comprise one or more interfaces, and it can be connected to computer architecture on communication network (except the network that can form by one or more elements of computer architecture or substitute as it).
According to one or more embodiments of the present invention, one or more input equipment can comprise the sensor for measurement parameter.Or, sensor, metering valve and/or pump, or these all assemblies, can be connected to operability and be connected on the connected network that computer body fastens.Controller can comprise that one or more computer storage media are as readable and/or can write nonvolatile recording medium, wherein can store for determining the signal of the program of being carried out by one or more processors.Storage medium can be for example disk or flash memory.Although computer architecture can be the computer architecture of a type that can realize each side of the present invention, should be appreciated that, the invention is not restricted to fasten realization exemplifying the software or the computer body that provide.Really, replace for example in all-purpose computer system, implementing, controller or its element or branch can be used as specialized system or as Special Purpose Programmable logic controller (PLC) or in the hierarchy of control of distributing in addition.In addition, should be appreciated that, one or more features of the present invention or aspect can be at softwares, hardware or firmware, or realize in any its combination.For example, one or more parts of the algorithm that can be carried out by controller can be carried out on different computers, and these computers can pass through one or more network-in-dialings again.
Those skilled in the art should be appreciated that, parameter as herein described and configuration are exemplary, and actual parameter and/or configuration depend on the specific occasion of using system of the present invention and technology.Those skilled in the art it should further be appreciated that or can use at the most normal experiment to confirm the equivalent of particular of the present invention.Therefore, embodiment as herein described is appreciated that as only providing as an example, and in the scope of claims and equivalent thereof; Other modes outside the present invention can specially describe realize.
Be also to be understood that in addition each feature as herein described, the system of the present invention relates to, subsystem, or technology and two or more features described herein, system, subsystem, or any combination of technology, as long as these features, system, subsystem, and technology contradiction not mutually, so two or more features, system, subsystem, and/or any combination of method is considered to embody within the scope of the present invention in claim.In addition, the behavior of discussing when relating to an embodiment, element, and feature has no intention to be excluded outside similar in other embodiments role.
Many ＂ of term ＂ used herein refer to two or more items or element.No matter in the parts such as description or claim, term ＂ comprises ＂, ＂ and comprises that ＂, ＂ carry ＂, ＂ and have ＂, ＂ and contain ＂ and ＂ to relate to ＂ be all open-ended term, means that ＂ includes but not limited to ＂.Therefore, the use of these terms means and is included in project and the equivalent thereof of listing thereafter, and other project.Only change word ＂ by ... form ＂ and " substantially by ... form " when relating to claim, be respectively sealing or semiclosed transformation word.As any preferential in ＂ the one ＂, ＂ the 2nd ＂, ＂ the 3rd ＂ and similar terms itself do not mean that for the ordinal number term of modifying claim key element in claim, precedence, or claim key element order of another key element or the interim order of wherein carrying out a kind of behavior of method relatively, but only serve as a mark for a claim key element with a certain title is different from there is identical title another key element (but in order to use ordinal number term) to distinguish these claim key elements.
Claims (3)
1. there is the electric deionizer that at least one consumes chamber and at least one enriched chamber, it is characterized in that, at least one enriched chamber comprises the first enriched layer consisting of anionic exchange medium and the second enriched layer that contains the mixture of anionic exchange medium and cation exchange medium, wherein said the second enriched layer is positioned at the first enriched layer downstream, be further characterized in that, at least one consumes chamber and comprises the first exhaustion layer consisting of anionic exchange medium and the second exhaustion layer that contains the mixture of anionic exchange medium and cation exchange medium, wherein said the second exhaustion layer is positioned at the first exhaustion layer downstream, and the wherein said floor being formed by anionic exchange medium and not exclusively evening up in adjacent chamber containing the floor of the mixture of anionic exchange medium and cation exchange medium.
2. in thering is the electric deionizer that consumes Shi He enriched chamber, process the method for water, comprise: water to be dealt with is introduced in the consumption chamber of electric deionizer, described consumption chamber comprises the first exhaustion layer consisting of anionic exchange medium and the second exhaustion layer that contains the mixture of anionic exchange medium and cation exchange medium, wherein said the second exhaustion layer is positioned at the first exhaustion layer downstream, and the wherein said floor consisting of anionic exchange medium and not exclusively evening up in adjacent chamber containing the floor of the mixture of anionic exchange medium and cation exchange medium; Promote non-required material to be transferred to the enriched chamber of electric deionizer from consuming chamber, described enriched chamber comprises ground floor anionic exchange medium and is positioned at the second layer medium in described ground floor downstream, the mixture that the described second layer comprises anionic exchange medium and cation exchange medium.
3. process the method for water, comprising: water to be dealt with is introduced in the consumption chamber of electric deionizer, described consumption chamber has at least one floor Ion Exchange Medium; At least a portion anionic species that is introduced into the water in consumption chamber with promotion is transferred to the first enriched chamber from ground floor Ion Exchange Medium, to generate the water with the first intermediate mass, described the first enriched chamber is determined by anion-selective membrane and cation selective film at least partly, described the first enriched chamber has ground floor anion-exchange material and the second layer, and it comprises the firstth district of the cation exchange media by substantially separating with anion-selective membrane containing the Second Region of anionic exchange medium at least partly.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80551006P | 2006-06-22 | 2006-06-22 | |
| US80550506P | 2006-06-22 | 2006-06-22 | |
| US60/805,505 | 2006-06-22 | ||
| US60/805,510 | 2006-06-22 | ||
| PCT/US2007/014622 WO2007149574A2 (en) | 2006-06-22 | 2007-06-22 | Electrodeioni zation apparatus and low scale potential water treatment |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053593.8A Division CN103739044B (en) | 2006-06-22 | 2007-06-22 | Low scale potentiality water processes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101472847A CN101472847A (en) | 2009-07-01 |
| CN101472847B true CN101472847B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780023054.8A Expired - Fee Related CN101472847B (en) | 2006-06-22 | 2007-06-22 | Electrodeionization device and method for treating water |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101472847B (en) |
| CA (1) | CA2850777A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2578543B1 (en) * | 2010-06-03 | 2017-03-01 | Organo Corporation | Electric device for production of deionized water |
| CN111646582A (en) * | 2020-07-16 | 2020-09-11 | 西安交通大学 | Circulating water electrochemical treatment system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5858191A (en) * | 1996-09-23 | 1999-01-12 | United States Filter Corporation | Electrodeionization apparatus and method |
| US6284124B1 (en) * | 1999-01-29 | 2001-09-04 | United States Filter Corporation | Electrodeionization apparatus and method |
| EP1308201A1 (en) * | 2001-10-31 | 2003-05-07 | Kurita Water Industries Ltd. | Electrodeionization apparatus |
-
2007
- 2007-06-22 CN CN200780023054.8A patent/CN101472847B/en not_active Expired - Fee Related
- 2007-06-22 CA CA2850777A patent/CA2850777A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5858191A (en) * | 1996-09-23 | 1999-01-12 | United States Filter Corporation | Electrodeionization apparatus and method |
| US6284124B1 (en) * | 1999-01-29 | 2001-09-04 | United States Filter Corporation | Electrodeionization apparatus and method |
| EP1308201A1 (en) * | 2001-10-31 | 2003-05-07 | Kurita Water Industries Ltd. | Electrodeionization apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2850777A1 (en) | 2007-12-27 |
| CN101472847A (en) | 2009-07-01 |
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