CA2614268A1 - Improved phosphorus removal system and process - Google Patents

Improved phosphorus removal system and process Download PDF

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Publication number
CA2614268A1
CA2614268A1 CA002614268A CA2614268A CA2614268A1 CA 2614268 A1 CA2614268 A1 CA 2614268A1 CA 002614268 A CA002614268 A CA 002614268A CA 2614268 A CA2614268 A CA 2614268A CA 2614268 A1 CA2614268 A1 CA 2614268A1
Authority
CA
Canada
Prior art keywords
flow
coagulant
section
sludge
phosphorus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002614268A
Other languages
French (fr)
Other versions
CA2614268C (en
Inventor
Eric Allen Lawrence
Joseph E. Zuback
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westech Engineering LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2614268A1 publication Critical patent/CA2614268A1/en
Application granted granted Critical
Publication of CA2614268C publication Critical patent/CA2614268C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/906—Phosphorus containing

Abstract

A phosphorus removal system is operable to remove phosphorus from an influent.
The system includes a first section receiving the influent and discharging a first flow. A first coagulant inlet is positioned upstream of the first section and is in fluid communication with the influent to introduce a first coagulant selected to precipitate phosphorus. A second section receives the first flow and discharges a second flow, and a third section receives the second flow and discharges an effluent. A second coagulant inlet is positioned downstream of the first section and upstream of the third section to introduce a second coagulant selected to precipitate phosphorus.

Claims (26)

1. A phosphorus removal system operable to remove phosphorus from an influent, the system comprising:

a first section receiving the influent and discharging a first flow;

a first coagulant inlet positioned upstream of the first section and in fluid communication with the influent to introduce a first coagulant selected to precipitate phosphorus;

a second section receiving the first flow and discharging a second flow;

a third section receiving the second flow and discharging an effluent; and a second coagulant inlet positioned downstream of the first section and upstream of the third section to introduce a second coagulant selected to precipitate phosphorus.
2. The system of claim 1, wherein the influent enters the first section in a bottom portion and the first flow exits the first section from a top portion.
3. The system of claim 1, wherein the first section includes one of a pipe section and a lamella section, the second section includes an adsorption clarifier, and the third section includes a mixed media filter.
4. The system of claim 1, wherein the first coagulant and the second coagulant are a metal salt.
5. The system of claim 1, wherein the first coagulant and the second coagulant are one of alum and ferric chloride.
6. The system of claim 1, wherein the second coagulant inlet is positioned to deliver the second coagulant to the first flow.
7. The system of claim 1, wherein the second coagulant inlet is positioned to deliver the second coagulant to the second flow.
8. The system of claim 1, wherein the first section divides the first coagulant and the influent into the first flow and a sludge, a portion of the sludge being mixed with the influent prior to the influent's entry into the first portion.
9. The system of claim 8, wherein the second coagulant is introduced with the portion of the sludge before the portion of sludge is mixed with the influent.
10. The system of claim 1, wherein the third portion includes a mixed media filter, and wherein the second coagulant is delivered to the mixed media filter during a backwash cycle.
11. A method of reducing the quantity of phosphorus in a flow that passes through a multi-section treatment process, the method comprising:

selecting a first coagulant that precipitates phosphorus;
mixing the first coagulant with the flow to define a first flow;

directing the first flow to a first section;
drawing a second flow from the first section;
introducing the second flow to a second section;
drawing a third flow from the second section;
introducing the third flow to a third section;
discharging an effluent from the third section;

selecting a second coagulant that precipitates phosphorus; and introducing the second coagulant into one of the second flow and the third flow.
12. The method of claim 11, wherein the first coagulant and the second coagulant are a metal salt.
13. The method of claim 11, wherein the first coagulant and the second coagulant are one of alum and ferric chloride.
14. The method of claim 11, further comprising separating the first flow into the second flow and a sludge in the first section.
15. The method of claim 14, further comprising mixing a portion of the sludge with the first flow before the first flow enters the first portion.
16. The method of claim 15, further comprising introducing a third coagulant into the portion of sludge before the portion of sludge enters the first flow.
17. The method of claim 11, wherein the third section includes a mixed media filter, the method further comprising injecting the second coagulant into the mixed media filter during a backwash cycle.
18. The method of claim 17, further comprising collecting a portion of particles from the mixed media filter during the backwash and adding at least a portion of the collected particles to the first flow.
19. The method of claim 11, wherein the second coagulant is introduced into the second flow and not the third flow.
20. A method of reducing the quantity of phosphorus in a flow, the method comprising:

selecting a first coagulant that precipitates phosphorus;

adding a quantity of the first coagulant to the flow to produce a first flow;
directing the first flow to a first section that is operable to remove a portion of the first coagulant and a portion of the phosphorus in the first flow, and to discharge a second flow;

directing the second flow to a filter that is operable to filter the second flow and to discharge an effluent;

backwashing the filter;

adding a quantity of a second coagulant to the filter during the backwashing step;

collecting a portion of particles from the filter during the backwash; and adding at least a portion of the collected particles to the first flow.
21. The method of claim 20, wherein the first coagulant and the second coagulant are a metal salt.
22. The method of claim 20, wherein the first coagulant and the second coagulant are one of alum and ferric chloride.
23. The method of claim 20, further comprising separating the first flow into the second flow and a sludge in the first section.
24. The method of claim 23, further comprising mixing a portion of the sludge with the first flow before the first flow enters the first portion.
25. The method of claim 24, further comprising mixing a third coagulant with the portion of the sludge before the portion of the sludge enters the first flow.
26. The method of claim 20, wherein the filter includes a mixed media filter.
CA2614268A 2005-07-06 2006-07-05 Improved phosphorus removal system and process Active CA2614268C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US69684605P 2005-07-06 2005-07-06
US60/696,846 2005-07-06
PCT/US2006/026150 WO2007005943A2 (en) 2005-07-06 2006-07-05 Improved phosphorus removal system and process

Publications (2)

Publication Number Publication Date
CA2614268A1 true CA2614268A1 (en) 2007-01-11
CA2614268C CA2614268C (en) 2013-10-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2614268A Active CA2614268C (en) 2005-07-06 2006-07-05 Improved phosphorus removal system and process

Country Status (7)

Country Link
US (3) US7670486B2 (en)
EP (1) EP1893534B1 (en)
AT (1) ATE523473T1 (en)
AU (1) AU2006265083B2 (en)
CA (1) CA2614268C (en)
ES (1) ES2370798T3 (en)
WO (1) WO2007005943A2 (en)

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US7670486B2 (en) * 2005-07-06 2010-03-02 Siemens Water Technologies Corp. Phosphorus removal system and process
GB0702164D0 (en) * 2007-02-05 2007-03-14 Bhr Group Ltd Coagulant dosing of sewage flows
US9418568B2 (en) * 2009-09-29 2016-08-16 Advanced Training System Llc System, method and apparatus for driver training system with dynamic mirrors
US20120261357A1 (en) * 2009-11-11 2012-10-18 Larsson Hans F Method for the treatment of water and wastewater
US9346692B2 (en) 2011-09-01 2016-05-24 Celanese International Corporation Reduction of organic phosphorus acids
JP6248318B2 (en) * 2013-02-14 2017-12-20 セイコーエプソン株式会社 Printing device
US10913667B2 (en) * 2017-12-08 2021-02-09 Westech Engineering, Inc. Multi-media clarification systems and methods
CN107998721A (en) * 2018-01-02 2018-05-08 吴宇祥 A kind of environment-friendly sewage purification pipe
US11130693B1 (en) * 2020-01-30 2021-09-28 Westech Engineering, Llc Combination biological contactor and self-backwashing filter systems
CN112607922A (en) * 2021-01-18 2021-04-06 内蒙古鑫水源科技有限公司 Multistage circulating sewage treatment plant

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Also Published As

Publication number Publication date
EP1893534A2 (en) 2008-03-05
EP1893534B1 (en) 2011-09-07
US7670486B2 (en) 2010-03-02
ES2370798T3 (en) 2011-12-22
WO2007005943A3 (en) 2007-09-20
EP1893534A4 (en) 2008-09-03
CA2614268C (en) 2013-10-22
US20070007215A1 (en) 2007-01-11
US20100044315A1 (en) 2010-02-25
AU2006265083A1 (en) 2007-01-11
AU2006265083B2 (en) 2011-09-22
WO2007005943A2 (en) 2007-01-11
US20100051526A1 (en) 2010-03-04
US8017018B2 (en) 2011-09-13
US8101072B2 (en) 2012-01-24
ATE523473T1 (en) 2011-09-15

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