DE3064050D1 - Control of activated sludge wastewater treating process for enhanced phosphorus removal - Google Patents

Control of activated sludge wastewater treating process for enhanced phosphorus removal

Info

Publication number
DE3064050D1
DE3064050D1 DE8080106093T DE3064050T DE3064050D1 DE 3064050 D1 DE3064050 D1 DE 3064050D1 DE 8080106093 T DE8080106093 T DE 8080106093T DE 3064050 T DE3064050 T DE 3064050T DE 3064050 D1 DE3064050 D1 DE 3064050D1
Authority
DE
Germany
Prior art keywords
control
activated sludge
phosphorus removal
treating process
wastewater treating
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
Application number
DE8080106093T
Other languages
German (de)
English (en)
Inventor
Chen Michael Shi-Kuan
Eugene Joseph Greskovich
Marshall Louis Spector
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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
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=22176790&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3064050(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Application granted granted Critical
Publication of DE3064050D1 publication Critical patent/DE3064050D1/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • 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
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • 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
    • Y10S210/903—Nitrogenous
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Removal Of Specific Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Electric Clocks (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Activated Sludge Processes (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Fats And Perfumes (AREA)
  • Saccharide Compounds (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
DE8080106093T 1979-10-09 1980-10-07 Control of activated sludge wastewater treating process for enhanced phosphorus removal Expired DE3064050D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/083,196 US4271026A (en) 1979-10-09 1979-10-09 Control of activated sludge wastewater treating process for enhanced phosphorous removal

Publications (1)

Publication Number Publication Date
DE3064050D1 true DE3064050D1 (en) 1983-08-11

Family

ID=22176790

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080106093T Expired DE3064050D1 (en) 1979-10-09 1980-10-07 Control of activated sludge wastewater treating process for enhanced phosphorus removal

Country Status (13)

Country Link
US (1) US4271026A (enExample)
EP (1) EP0026938B1 (enExample)
JP (1) JPS57113893A (enExample)
AT (1) ATE4045T1 (enExample)
AU (1) AU531468B2 (enExample)
CA (1) CA1143486A (enExample)
DE (1) DE3064050D1 (enExample)
DK (1) DK421580A (enExample)
ES (1) ES495736A0 (enExample)
FI (1) FI803148A7 (enExample)
GR (1) GR70762B (enExample)
IL (1) IL61159A (enExample)
ZA (1) ZA806238B (enExample)

Families Citing this family (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353800A (en) * 1980-08-25 1982-10-12 Ferdinand Besik Method and an apparatus for biological treatment of waste waters
JPS5839599B2 (ja) * 1981-04-13 1983-08-31 荏原インフイルコ株式会社 有機性廃液からのリン除去法
US4421648A (en) * 1981-06-01 1983-12-20 Ferdinand Besik Apparatus and a method for biological treatment of waste waters
US4731185A (en) * 1981-07-13 1988-03-15 Air Products And Chemicals, Inc. Biological wastewater treating system
JPS58139791A (ja) * 1982-02-12 1983-08-19 Ebara Infilco Co Ltd 有機性廃液の処理法
NL8201293A (nl) * 1982-03-29 1983-10-17 Gist Brocades Nv Fluid-bed reactor voor het zuiveren van afvalwater.
ATE22276T1 (de) * 1982-07-21 1986-10-15 Air Prod & Chem Verfahren fuer die biologische behandlung von abwasser.
US4488967A (en) * 1983-03-07 1984-12-18 Air Products And Chemicals, Inc. Treatment of wastewater containing phosphorus compounds
US4488968A (en) * 1983-03-07 1984-12-18 Air Products And Chemicals, Inc. Removal of phosphates and BOD from wastewaters
GB2155003B (en) * 1984-01-20 1987-12-31 Nishihara Env San Res Co Ltd Activated sludge method
US4650585A (en) * 1984-04-17 1987-03-17 Air Products And Chemicals, Inc. Method for minimizing diurnal swing in phosphorus content of effluent streams from wastewater treating plants
US4552663A (en) * 1984-07-31 1985-11-12 Air Products And Chemicals, Inc. Process for the removal of ammoniacal nitrogen in the BOD sorption zone of a wastewater treatment plant
HU205330B (en) * 1986-05-19 1992-04-28 Tatabanyai Banyak Vallalat Process for purifying sewage containing organic material, by increased removal of phosphorus and nitrogen
DE3644770C1 (de) * 1986-12-30 1988-06-01 Linde Ag Verfahren zur Reinigung phosphathaltiger Abwaesser mittels biologischer Phosphorelimination sowie Anlage zur Durchfuehrung dieses Verfahrens
US4898672A (en) * 1987-09-14 1990-02-06 Clifft Ricky C Oxygen controlling wastewater treatment method
US4846965A (en) * 1987-09-14 1989-07-11 Clifft Ricky C Oxygen controlling wastewater treatment system
FR2621136A1 (enExample) * 1987-09-24 1989-03-31 Lyonnaise Eaux
US5013441A (en) * 1988-07-20 1991-05-07 Goronszy Mervyn C Biological nutrient removal with sludge bulking control in a batch activated sludge system
US4919815A (en) * 1989-02-06 1990-04-24 Zimpro/Passavant Inc. Two-stage anaerobic/aerobic treatment process
FR2667057B1 (fr) * 1990-09-25 1993-07-09 Degremont Reacteur perfectionne pour le traitement biologique des eaux residuaires.
IT1249625B (it) * 1991-06-10 1995-03-09 Enea Procedimento per il trattamento depurativo delle acque di scarico municipali, e impianto che utilizza il detto procedimento
US5182021A (en) * 1991-12-16 1993-01-26 Lehigh University Biological process for enhanced removal of ammonia, nitrite, nitrate, and phosphate from wastewater
US5288405A (en) * 1993-01-27 1994-02-22 Piedmont Olsen Hensley, Inc. Wastewater treatment with enhanced biological phosphorus removal and related purification processes
US5380438A (en) * 1993-08-17 1995-01-10 City Of Atlanta Treatment of wastewater through enhanced biological phosphorus removal
US5702499A (en) * 1994-01-18 1997-12-30 Sim Associates Waste conversion by liquid thermophilic aerobic digestion
CA2639642C (en) 1996-12-20 2013-01-15 Siemens Water Technologies Corp. Scouring method
US6096214A (en) 1997-12-01 2000-08-01 Freese And Nichols, Inc. Process for applying alternating anaerobic contact processing for the treatment of wastewater
AU2003236421B2 (en) * 1998-03-04 2006-12-14 Mikkel G. Mandt Surge Anoxic Mix Sequencing Batch Reactor Systems
AU2893999A (en) * 1998-03-04 1999-09-20 Mikkel G. Mandt Surge anoxic mix sequencing batch reactor systems
US6190554B1 (en) * 1998-03-04 2001-02-20 Mikkel G. Mandt Surge anoxic mix sequencing batch reactor systems
JP3601976B2 (ja) * 1998-06-16 2004-12-15 シャープ株式会社 排水処理方法および排水処理装置
US8518704B2 (en) * 1999-08-03 2013-08-27 Advanced Micro Devices, Inc. System and method for monitoring and/or controlling attributes of multiple chemical mixtures with a single sensor
US6592757B2 (en) * 2000-02-01 2003-07-15 O'brien & Gere Engineers, Inc. Selector contact stabilization process and apparatus for wastewater treatment
US6565750B2 (en) 2000-08-31 2003-05-20 O'brien & Gere Engineers, Inc. Trickling filter system for biological nutrient removal
AUPR421501A0 (en) * 2001-04-04 2001-05-03 U.S. Filter Wastewater Group, Inc. Potting method
AUPR692401A0 (en) 2001-08-09 2001-08-30 U.S. Filter Wastewater Group, Inc. Method of cleaning membrane modules
US6712970B1 (en) * 2002-01-11 2004-03-30 Enviroquip, Inc. Sewage treatment process with phosphorus removal
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
AUPS300602A0 (en) 2002-06-18 2002-07-11 U.S. Filter Wastewater Group, Inc. Methods of minimising the effect of integrity loss in hollow fibre membrane modules
US6872313B1 (en) * 2002-09-23 2005-03-29 Agrimond Usa Corporation Domestic wastewater treatment system
JP4282598B2 (ja) 2002-10-10 2009-06-24 シーメンス・ウォーター・テクノロジーズ・コーポレーション 濾過装置及び該濾過装置を洗浄する方法
AU2002953111A0 (en) 2002-12-05 2002-12-19 U. S. Filter Wastewater Group, Inc. Mixing chamber
JP4611982B2 (ja) * 2003-08-29 2011-01-12 シーメンス・ウォーター・テクノロジーズ・コーポレーション 逆洗方法
AU2004289373B2 (en) * 2003-11-14 2010-07-29 Evoqua Water Technologies Llc Improved module cleaning method
WO2005092799A1 (en) * 2004-03-26 2005-10-06 U.S. Filter Wastewater Group, Inc. Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
JP2007535398A (ja) * 2004-04-22 2007-12-06 シーメンス ウォーター テクノロジース コーポレイション 有機物質を消化するためのメンブレンバイオリアクタおよび処理槽を含む濾過装置ならびに廃液処理方法
NZ588094A (en) 2004-08-20 2012-04-27 Siemens Water Tech Corp Potting head for hollow fibre filter module
JP4838248B2 (ja) 2004-09-07 2011-12-14 シーメンス・ウォーター・テクノロジーズ・コーポレーション 逆洗液体廃棄物の低減
US8506806B2 (en) * 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
WO2006029465A1 (en) 2004-09-15 2006-03-23 Siemens Water Technologies Corp. Continuously variable aeration
US7172699B1 (en) 2004-10-13 2007-02-06 Eimco Water Technologies Llc Energy efficient wastewater treatment for nitrogen and phosphorus removal
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
JP2008525167A (ja) * 2004-12-24 2008-07-17 シーメンス・ウォーター・テクノロジーズ・コーポレーション 簡易ガス洗浄方法および当該技術分野の装置
EP1835985B1 (en) * 2004-12-24 2012-03-14 Siemens Industry, Inc. Cleaning in membrane filtration systems
KR20080005993A (ko) 2005-04-29 2008-01-15 지멘스 워터 테크놀로지스 코포레이션 막 필터의 화학 세정
US7344643B2 (en) * 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
SG164499A1 (en) 2005-08-22 2010-09-29 Siemens Water Tech Corp An assembly for water filtration using a tube manifold to minimise backwash
US7569147B2 (en) * 2005-09-02 2009-08-04 Siemens Water Technologies Corp. Screening of inert solids from a low-yield wastewater treatment process
US20070138090A1 (en) 2005-10-05 2007-06-21 Jordan Edward J Method and apparatus for treating wastewater
WO2007044345A2 (en) 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Method and apparatus for treating wastewater
US7833415B2 (en) * 2005-10-26 2010-11-16 D.C. Water & Sewer Authority Method for treating raw sludge including a simultaneous or pulsed aerobic/anoxic digestion process
US20080257822A1 (en) * 2005-12-09 2008-10-23 Warren Thomas Johnson Reduced Backwash Volume Process
JP2009523062A (ja) * 2006-01-12 2009-06-18 シーメンス・ウォーター・テクノロジーズ・コーポレーション ろ過プロセスにおける改良型運転方法
US7455765B2 (en) 2006-01-25 2008-11-25 Siemens Water Technologies Corp. Wastewater treatment system and method
WO2007103499A2 (en) * 2006-03-07 2007-09-13 Siemens Water Technologies Corp. Multivalent metal ion management for low sludge processes
WO2008024445A2 (en) * 2006-08-23 2008-02-28 Siemens Water Technologies Corp. Sequencing batch reactor with continuous membrane filtration and solids reduction
CN101511455B (zh) * 2006-08-31 2013-07-03 西门子工业公司 低压回洗
US8293098B2 (en) * 2006-10-24 2012-10-23 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
WO2008098309A1 (en) * 2007-02-16 2008-08-21 Siemens Water Technologies Corp. Membrane filtration process and design
US8318028B2 (en) * 2007-04-02 2012-11-27 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
EP2134454B1 (en) * 2007-04-04 2013-08-28 Siemens Industry, Inc. Hollow fibre membrane module with protection screen
KR20130135980A (ko) 2007-05-29 2013-12-11 지멘스 인더스트리 인코포레이티드 펄스형 공기리프트 펌프를 이용한 막 세정 방법 및 장치
JP2010527773A (ja) * 2007-05-29 2010-08-19 シーメンス ウォーター テクノロジース コーポレイション エアリフトポンプを用いた膜洗浄
KR20100028116A (ko) * 2007-06-28 2010-03-11 지멘스 워터 테크놀로지스 코포레이션 간단한 여과 시스템을 위한 세정 방법
WO2009026352A1 (en) * 2007-08-20 2009-02-26 Jon Inman Sattler System and method for processing wastewater
US8894856B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
US8894857B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Methods and systems for treating wastewater
US8623213B2 (en) * 2008-03-28 2014-01-07 Siemens Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
CA2731774A1 (en) 2008-07-24 2010-01-28 Siemens Water Technologies Corp. Frame system for membrane filtration modules
EP2313172A4 (en) * 2008-08-14 2013-03-13 Siemens Industry Inc BLOCK CONFIGURATION FOR DISTILLATION ON LARGE SCALE MEMBRANE
AU2009282912B2 (en) * 2008-08-20 2014-11-27 Evoqua Water Technologies Llc Improved membrane system backwash energy efficiency
JP4995215B2 (ja) * 2009-03-23 2012-08-08 前澤工業株式会社 汚水処理設備
EP2437870A1 (en) * 2009-06-02 2012-04-11 Siemens Industry, Inc. Membrane cleaning with pulsed gas slugs and global aeration
AU2010101488B4 (en) 2009-06-11 2013-05-02 Evoqua Water Technologies Llc Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane
US8685247B2 (en) * 2009-12-03 2014-04-01 Evoqua Water Technologies Llc Systems and methods for nutrient removal in biological treatment systems
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
EP2606008A4 (en) 2010-08-18 2014-07-23 Evoqua Water Technologies Llc HYBRID SYSTEM FOR STABILIZATION THROUGH CONTACT AND PRIMARY FLOTATION
WO2012040412A1 (en) 2010-09-24 2012-03-29 Siemens Industry, Inc. Fluid control manifold for membrane filtration system
US9908800B2 (en) * 2011-04-14 2018-03-06 Global Water Group, Incorporated System and method for wastewater treatment
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
CA2850522C (en) 2011-09-30 2021-03-16 Evoqua Water Technologies Llc Shut-off valve for isolation of hollow fiber membrane filtration module
KR102108593B1 (ko) 2012-06-28 2020-05-29 에보쿠아 워터 테크놀로지스 엘엘씨 포팅 방법
AU2013324056B2 (en) 2012-09-26 2017-11-16 Evoqua Water Technologies Llc Membrane securement device
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
WO2014052139A1 (en) 2012-09-27 2014-04-03 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
US10131550B2 (en) 2013-05-06 2018-11-20 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
HUE061765T2 (hu) 2013-10-02 2023-08-28 Rohm & Haas Electronic Mat Singapore Pte Ltd Berendezés membrán filtrációs modul javítására
EP3322511B1 (en) 2015-07-14 2022-09-07 Rohm & Haas Electronic Materials Singapore Pte. Ltd Aeration device for filtration system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756946A (en) * 1972-06-13 1973-09-04 Biospherics Inc Sewage treatment process
US3730882A (en) * 1972-06-13 1973-05-01 Biospherics Inc Internal precipitation of phosphate in settling zone
SU784754A3 (ru) * 1975-06-04 1980-11-30 Юнион Карбид Корпорейшн (Фирма) Способ биохимической очистки сточных вод, содержащих фосфор
US4042493A (en) * 1975-10-28 1977-08-16 Union Carbide Corporation Phosphate removal from BOD-containing wastewater
US4162153A (en) * 1976-04-12 1979-07-24 Air Products And Chemicals, Inc. High nitrogen and phosphorous content biomass produced by treatment of a BOD-containing material
US4056465A (en) * 1976-04-12 1977-11-01 Air Products And Chemicals, Inc. Production of non-bulking activated sludge
DE2641750A1 (de) * 1976-09-16 1978-03-23 Vysoka Skola Chem Tech Verfahren zur reinigung von abwasser mit einem hohen gehalt an organischen stoffen
US4183808A (en) * 1977-11-23 1980-01-15 Union Carbide Corporation Phosphate removal from wastewater
US4173531A (en) * 1977-11-23 1979-11-06 Union Carbide Corporation Nitrification-denitrification of wastewater

Also Published As

Publication number Publication date
AU6304880A (en) 1981-04-16
EP0026938A1 (en) 1981-04-15
FI803148L (fi) 1981-04-10
DK421580A (da) 1981-04-10
EP0026938B1 (en) 1983-07-06
ES8107131A1 (es) 1981-09-16
FI803148A7 (fi) 1981-04-10
CA1143486A (en) 1983-03-22
ES495736A0 (es) 1981-09-16
US4271026A (en) 1981-06-02
ZA806238B (en) 1981-09-30
AU531468B2 (en) 1983-08-25
GR70762B (enExample) 1983-03-16
ATE4045T1 (de) 1983-07-15
IL61159A (en) 1983-07-31
JPS57113893A (en) 1982-07-15
JPS6312680B2 (enExample) 1988-03-22
IL61159A0 (en) 1980-11-30

Similar Documents

Publication Publication Date Title
DE3064050D1 (en) Control of activated sludge wastewater treating process for enhanced phosphorus removal
HK38082A (en) Method of treating waste water and sludge product thereof
EP0132609A3 (en) Biological wastewater treating system
AU556054B2 (en) Anaerobic wastewater treatment with methanol fermentation
DE3471087D1 (en) Method of treating peroxide-containing wastewater
HUT35220A (en) Process for purifying sewage in equipment comprising adsorptive step
SE8403881L (sv) Sett och anordning for biologisk rening av spillvatten
EP0099052A3 (de) Verfahren zur Aufbereitung von fäkalen Abfällen
EP0106043A3 (en) Process and aeration tank system for biologically treating sewage
DE3061640D1 (en) Process for reabsorption and retention of phosphorus by activated biomass
GB1432667A (en) Waste water treatment
JPS55155798A (en) Treating method of organic waste water
GB1535549A (en) Method of purifying waste water
JPS56150487A (en) Disposal of sewage
JPS5362357A (en) Method of treating waste water
DE3364463D1 (en) Method and apparatus for the biological nitrification of waste water
JPS5541840A (en) Aerobic, high temperature fermentation treatment of sewage and system therefor
ES8701693A1 (es) Procedimiento para la depuracion de aguas residuales
JPS5212761A (en) Method of treating waste water
JPS55167098A (en) Pretreatment of sludge
JPS5212762A (en) Method of treating waste water
KR840000436A (ko) 유기성 폐수의 처리방법
JPS5730600A (en) Disposal of organic waste liquid
ES8307188A1 (es) "metodo para la fermentacion anaerobica de aguas residuales".
JPS55114395A (en) Treatment of excretion

Legal Events

Date Code Title Description
8328 Change in the person/name/address of the agent

Free format text: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. DR.JUR. DR.RER.NAT., PAT.-ANWAELTE, 8000 MUENCHEN

8331 Complete revocation