DE69221993D1 - Verfahren für Abwasserbehandlung - Google Patents

Verfahren für Abwasserbehandlung

Info

Publication number
DE69221993D1
DE69221993D1 DE69221993T DE69221993T DE69221993D1 DE 69221993 D1 DE69221993 D1 DE 69221993D1 DE 69221993 T DE69221993 T DE 69221993T DE 69221993 T DE69221993 T DE 69221993T DE 69221993 D1 DE69221993 D1 DE 69221993D1
Authority
DE
Germany
Prior art keywords
bioreactor
nitrifying
denitrifying
carried out
bioreactors
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.)
Expired - Fee Related
Application number
DE69221993T
Other languages
English (en)
Other versions
DE69221993T2 (de
Inventor
Eric Han Marsman
Gerard Johannes Francis Vlekke
Leonardus Gerardus Cat Urlings
Berend Aldert Huigo Reitsma
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.)
Tauw Milieu BV
Original Assignee
Tauw Milieu BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19859922&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69221993(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tauw Milieu BV filed Critical Tauw Milieu BV
Application granted granted Critical
Publication of DE69221993D1 publication Critical patent/DE69221993D1/de
Publication of DE69221993T2 publication Critical patent/DE69221993T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1205Particular type of activated sludge processes
    • C02F3/1215Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/06Aerobic processes using submerged filters
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2806Anaerobic processes using solid supports for microorganisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00Liquid purification or separation
    • Y10S210/902Materials removed
    • Y10S210/903Nitrogenous
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00Liquid purification or separation
    • Y10S210/902Materials removed
    • Y10S210/906Phosphorus containing
DE1992621993 1991-11-18 1992-11-16 Verfahren für Abwasserbehandlung Expired - Fee Related DE69221993T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9101917A NL9101917A (nl) 1991-11-18 1991-11-18 Werkwijze voor het zuiveren van afvalwater, alsmede inrichting te gebruiken bij deze werkwijze.

Publications (2)

Publication Number Publication Date
DE69221993D1 true DE69221993D1 (de) 1997-10-09
DE69221993T2 DE69221993T2 (de) 1998-03-19

Family

ID=19859922

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1992621993 Expired - Fee Related DE69221993T2 (de) 1991-11-18 1992-11-16 Verfahren für Abwasserbehandlung

Country Status (7)

Country Link
US (1) US5342522A (de)
EP (1) EP0543457B1 (de)
AT (1) ATE157634T1 (de)
CA (1) CA2083199C (de)
DE (1) DE69221993T2 (de)
DK (1) DK0543457T3 (de)
NL (1) NL9101917A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113277620A (zh) * 2021-06-02 2021-08-20 大连理工大学 一种基于碳源缓释型悬浮生物载体的双池同步硝化反硝化工艺

Families Citing this family (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308156C2 (de) * 1993-03-15 2000-04-27 Philipp Mueller Gmbh Anlage für die Reinigung von Abwasser
FR2707621B1 (fr) * 1993-07-12 1995-10-20 Omnium Traitement Valorisa Procédé et installation d'épuration d'eau à boues physico-chimiques dénitrifiantes.
DE4424298A1 (de) * 1994-07-09 1996-01-11 Schreiber Berthold Verfahren zur biologischen Abwasserreinigung mit dosierter Zugabe von kohlenstoffhaltigen organischen Substraten
JP3335500B2 (ja) * 1994-08-03 2002-10-15 シャープ株式会社 排水処理装置および排水処理方法
ZA957644B (en) * 1994-09-13 1996-05-14 Innoval Management Ltd Method for cleaning contaminated water
US5545326A (en) * 1994-12-27 1996-08-13 Petering; John L. Method and apparatus for the treatment of concentrated wastewater
US5624563A (en) * 1995-08-25 1997-04-29 Hawkins; John C. Process and apparatus for an activated sludge treatment of wastewater
JP3302227B2 (ja) * 1995-09-06 2002-07-15 シャープ株式会社 排水処理装置および排水処理方法
US5651892A (en) * 1996-03-14 1997-07-29 Deep Shaft Technology Inc. Biodegradeable effluent nutrient removal
NL1005343C1 (nl) * 1996-08-23 1998-02-26 Univ Delft Tech Werkwijze voor het behandelen van ammoniak-houdend afvalwater.
US5807484A (en) * 1996-10-23 1998-09-15 Couture; Real Waste water treatment
US5861095A (en) * 1997-04-09 1999-01-19 Lemna Corporation Method and device for treating wastewater
US5833856A (en) * 1997-07-18 1998-11-10 Tianjin Municipal Engineering Design And Research Institute Process for biologically removing phosphorus and nitrogen from wastewater by controlling carbohydrate content therein
JP3863995B2 (ja) * 1998-06-19 2006-12-27 ダイワ工業株式会社 脱窒機能を有する水処理装置
DE19903035C2 (de) * 1999-01-26 2001-01-04 Rudolf Messner Verfahren sowie Vorrichtung zur Behandlung von Abwasser in Klärbecken
US6183643B1 (en) 1999-02-24 2001-02-06 Ag Tech International, Inc. Method and apparatus for denitrification of water
US6423229B1 (en) 1999-12-14 2002-07-23 Aquasol Envirotech Ltd. Bioreactor systems for biological nutrient removal
KR100350893B1 (ko) * 2000-04-26 2002-09-05 한상배 공정간 고액분리와 유로변경 및 간헐포기에 의한 질소, 인제거방법 및 장치
US6312599B1 (en) 2000-06-01 2001-11-06 John H. Reid Method of using wastewater flow equalization basins for multiple biological treatments
US6517723B1 (en) 2000-07-27 2003-02-11 Ch2M Hill, Inc. Method and apparatus for treating wastewater using membrane filters
US6565750B2 (en) 2000-08-31 2003-05-20 O'brien & Gere Engineers, Inc. Trickling filter system for biological nutrient removal
US6387264B1 (en) 2000-12-05 2002-05-14 Cleanwater Services Unified fermentation and thickening process
US7854842B2 (en) * 2001-03-02 2010-12-21 Daniel Robert Miklos Apparatus and methods for control of waste treatment processes
US6660163B2 (en) * 2001-03-02 2003-12-09 Daniel Robert Miklos Waste treatment with control over biological solids
US6875355B2 (en) * 2001-03-20 2005-04-05 Mcgrath Michael B. Denitrification system for nitrified wastewater or nitrified water
US6835560B2 (en) * 2001-10-18 2004-12-28 Clemson University Process for ozonating and converting organic materials into useful products
WO2003051485A1 (en) * 2001-12-13 2003-06-26 Environmental Operating Solutions, Inc. Process and apparatus for waste water treatment
US6712970B1 (en) * 2002-01-11 2004-03-30 Enviroquip, Inc. Sewage treatment process with phosphorus removal
US6946073B2 (en) * 2003-09-02 2005-09-20 Ch2M Hill, Inc. Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent
NL1025346C2 (nl) * 2004-01-29 2005-08-01 Seghers Keppel Technology Grou Een werkwijze voor het behandelen van organisch slib.
US7252765B2 (en) * 2004-03-01 2007-08-07 Black & Veatch Holding Co. Process for improving phosphorous removal in waste water treatment without chemical addition
DE102004055056A1 (de) * 2004-11-15 2006-05-24 Georg Fritzmeier Gmbh & Co.Kg Füllkörper für einen Bioreaktor
US7329349B2 (en) * 2005-04-11 2008-02-12 Adventus Intellectual Property Inc. Water treatment
US7344643B2 (en) 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
US20070045179A1 (en) * 2005-08-23 2007-03-01 Skyblue Waters Usa, Inc. System and method for introducing high pressure air into a wastewater treatment system
US7531087B2 (en) * 2005-08-23 2009-05-12 Skyblue Waters Usa, Inc. System for treating wastewater
US7527735B2 (en) * 2005-08-23 2009-05-05 Skyblue Waters Usa, Inc. System for treating wastewater
US20070045178A1 (en) * 2005-08-23 2007-03-01 Skyblue Waters Usa, Inc. System and method for wastewater treatment
WO2007028149A2 (en) 2005-09-02 2007-03-08 Siemens Water Technologies Corp. Screening of inert solids from a low-yield wastewater treatment process
US7651615B2 (en) * 2005-12-23 2010-01-26 Clemson University Research Foundation Process for reducing waste volume
JP5315587B2 (ja) * 2005-12-27 2013-10-16 栗田工業株式会社 有機物含有排水の処理装置及び処理方法
TWI316923B (en) * 2006-02-17 2009-11-11 Ind Tech Res Inst System and method for treating carbon, nitrogen, phosphorous containing wastewater
US7473364B2 (en) 2006-03-07 2009-01-06 Siemens Water Technologies Corp. Multivalent metal ion management for low sludge processes
US7544292B2 (en) * 2006-05-03 2009-06-09 Hoot Aerobic Systems, Inc. Apparatus for denitrifying wastewater
WO2008024445A2 (en) 2006-08-23 2008-02-28 Siemens Water Technologies Corp. Sequencing batch reactor with continuous membrane filtration and solids reduction
US20080053909A1 (en) * 2006-09-06 2008-03-06 Fassbender Alexander G Ammonia recovery process
US20080156726A1 (en) * 2006-09-06 2008-07-03 Fassbender Alexander G Integrating recycle stream ammonia treatment with biological nutrient removal
GB0624167D0 (en) * 2006-12-04 2007-01-10 Univ Gent Process and apparatus for the biological treatment of waste water
US8066880B2 (en) * 2007-05-04 2011-11-29 Hoot Aerobic Systems, Inc. Apparatus for denitrifying wastewater
US7666300B2 (en) * 2007-05-04 2010-02-23 Hoot Aerobic Systems, Inc. Apparatus for denitrifying wastewater
WO2008141290A1 (en) * 2007-05-11 2008-11-20 Ch2M Hill, Inc. Low phosphorous water treatment methods and systems
US20100163484A1 (en) * 2007-06-18 2010-07-01 Cormier Murphy J Compound for denitrifying wastewater
US20090050561A1 (en) * 2007-08-20 2009-02-26 Jon Inman Sattler System and method for processing wastewater
SG189695A1 (en) 2008-03-28 2013-05-31 Siemens Industry Inc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
US8894856B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
CN101318741B (zh) * 2008-07-11 2011-01-05 北京城市排水集团有限责任公司 同步城市污水脱氮与污泥内碳源开发装置和方法
US8318008B1 (en) 2008-08-15 2012-11-27 SepticNet, Inc. Modular individual wastewater nutrient removal system
WO2011068931A1 (en) * 2009-12-03 2011-06-09 Siemens Industry, Inc. Systems and methods for nutrient removal in biological treatment systems
US8721887B2 (en) 2009-12-07 2014-05-13 Ch2M Hill, Inc. Method and system for treating wastewater
EP2560922A4 (de) * 2010-04-21 2015-10-07 Evoqua Water Technologies Pte Ltd Verfahren und systeme zur abwasserbearbeitung
CN101812702B (zh) * 2010-05-11 2012-03-21 中国环境科学研究院 三相三维电化学反应器
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
US8808544B2 (en) 2010-08-18 2014-08-19 Evoqua Water Technologies Llc Contact-stabilization/prime-float hybrid
CN102120675B (zh) * 2011-01-25 2012-11-07 大连理工大学 一种零价铁两相厌氧反应器
CN102120674B (zh) * 2011-01-25 2012-11-07 大连理工大学 一种零价铁强化的厌氧水解酸化的污水处理方法
US8808543B2 (en) 2011-06-30 2014-08-19 John H. Reid Method for wet weather wastewater treatment
MX354929B (es) 2011-10-13 2018-03-16 Tenfold Tech Llc Sistema y método balanceados para la elaboración de productos microbianos.
PL401650A1 (pl) 2012-11-16 2014-05-26 Andrzej Gólcz Sposób oczyszczania ścieków w systemie przepływowym oraz instalacja do oczyszczania ścieków, zwłaszcza dla wymogu wysokiego stopnia redukcji biogennych związków azotanowych
US10131550B2 (en) 2013-05-06 2018-11-20 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
GB2548913A (en) * 2016-04-01 2017-10-04 J Kellett Eugene Flood mitigation system
WO2018009348A1 (en) * 2016-07-08 2018-01-11 Murthy Sudhir N Method and apparatus for nutrient removal with carbon addition
CN109912015A (zh) * 2019-04-17 2019-06-21 江西夏氏春秋环境股份有限公司 一种畜禽养殖废水的生物脱氮工艺
CN110304796A (zh) * 2019-07-16 2019-10-08 安徽国祯环保节能科技股份有限公司 一种适宜高低浓度变化的河道排口水体净化系统及方法
CN111196628B (zh) * 2020-02-18 2022-03-04 成都之和环保科技有限公司 一种基于改良反硝化滤柱的城镇污水深度处理的方法
CN111333180B (zh) * 2020-03-19 2023-02-28 天津大学 一种基于生物膜反硝化系统的金属铬回收方法
EE202100007A (et) * 2021-03-08 2022-10-17 Tallinna Tehnikaülikool Meetod lämmastiku, fosfori ja orgaaniliste reostuskomponentide ärastamiseks reoveest süstikreþiimis
CN114105294B (zh) * 2021-10-28 2023-09-22 苏州水星环保工业系统有限公司 一种高盐高氨氮有机废水生物处理系统的构建及使用方法
CN114538614B (zh) * 2022-02-07 2023-07-28 黑龙江工程学院 连续流强化同步硝化反硝化与反硝化除磷装置及控制方法
CN114477642A (zh) * 2022-02-13 2022-05-13 北京工业大学 一种同步处理高氨氮废水和剩余污泥的装置和方法
CN114716017A (zh) * 2022-04-11 2022-07-08 北京科技大学 一种以玉米芯为补充碳源的污水脱氮方法及系统
CN115010258B (zh) * 2022-08-03 2022-11-29 北京汇馥低碳环保科技有限公司 集约化自循环富集微生物综合曝气污水处理池及其工法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206440A1 (de) * 1982-02-23 1983-09-01 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur biologischen reinigung von phosphathaltigem abwasser
DE3402688A1 (de) * 1984-01-26 1985-08-01 Passavant-Werke AG & Co KG, 6209 Aarbergen Biologisches abwasserreinigungsverfahren mit nitrifikationszone
DE3408561A1 (de) * 1984-03-08 1985-09-12 Elmers, Peter, Dipl.-Ing., 2070 Ahrensburg Verfahren zur biologischen oxidation von organischen kohlenstoffverbindungen (bsb-abbau) mit nitrifikation und denitrifikation der stickstoffverbindungen von abwaessern ohne externe h-donatoren fuer die denitrifikation und anlage zur durchfuehrung des verfahrens
DE3619229C2 (de) * 1986-06-07 1994-03-24 Ivan Prof Dr Ing Sekoulov Mehrstufiges Verfahren z. weitgehenden Abwasserreinigung d. biologische Oxidation v. organischen Kohlenwasserstoffverbindungen (BSB-Abbau), einer biologischen Stickstoffelimination ohne externe H-Donatoren u. einer anschließenden Filtration u. Anlage z. Durchführung d. Verfahrens
US4826601A (en) * 1986-08-01 1989-05-02 Waste Treatment Technologies, Inc. Sewage treatment method
US5252214A (en) * 1987-02-27 1993-10-12 Gunter Lorenz Biological dephosphatization and (de)nitrification
US4867883A (en) * 1987-04-21 1989-09-19 Hampton Roads Sanitation District Of The Commonwealth Of Virginia High-rate biological waste water treatment process using activated sludge recycle
DE3933326A1 (de) * 1989-10-06 1991-04-18 August Dor Verfahren zur biologischen elimination von phosphat in kombination mit nitrifikation und denitrifikation im abwasser
ATE109117T1 (de) * 1990-05-18 1994-08-15 Buchs Umwelttech Utb Verfahren zur nitrat- und phosphatelimination bei der biologischen reinigung von abwasser.
US5213681A (en) * 1991-09-09 1993-05-25 T. Kruger, Inc. Method for biologically removing nitrogen from wastewater
US5182021A (en) * 1991-12-16 1993-01-26 Lehigh University Biological process for enhanced removal of ammonia, nitrite, nitrate, and phosphate from wastewater
US5248422A (en) * 1992-05-28 1993-09-28 Neu Kenneth E Process for treating wastewater to remove BOD and nutrients

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113277620A (zh) * 2021-06-02 2021-08-20 大连理工大学 一种基于碳源缓释型悬浮生物载体的双池同步硝化反硝化工艺

Also Published As

Publication number Publication date
ATE157634T1 (de) 1997-09-15
DE69221993T2 (de) 1998-03-19
CA2083199A1 (en) 1993-05-19
EP0543457A1 (de) 1993-05-26
DK0543457T3 (da) 1997-10-20
EP0543457B1 (de) 1997-09-03
US5342522A (en) 1994-08-30
NL9101917A (nl) 1993-06-16
CA2083199C (en) 2003-04-08

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