FI771111A - - Google Patents

Info

Publication number
FI771111A
FI771111A FI771111A FI771111A FI771111A FI 771111 A FI771111 A FI 771111A FI 771111 A FI771111 A FI 771111A FI 771111 A FI771111 A FI 771111A FI 771111 A FI771111 A FI 771111A
Authority
FI
Finland
Application number
FI771111A
Other languages
Finnish (fi)
Other versions
FI69824C (fi
FI69824B (fi
Inventor
Marshall Louis Spector
Original Assignee
Air Prod & Chem
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 Air Prod & Chem filed Critical Air Prod & Chem
Publication of FI771111A publication Critical patent/FI771111A/fi
Application granted granted Critical
Publication of FI69824B publication Critical patent/FI69824B/fi
Publication of FI69824C publication Critical patent/FI69824C/fi

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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
    • 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)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Activated Sludge Processes (AREA)
FI771111A 1976-04-12 1977-04-06 Foerfarande foer inhibering av proliferation av filamentoes bimassa vid drift av ett aktivt slam-system FI69824C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/676,266 US4056465A (en) 1976-04-12 1976-04-12 Production of non-bulking activated sludge
US67626676 1976-04-12

Publications (3)

Publication Number Publication Date
FI771111A true FI771111A (ro) 1977-10-13
FI69824B FI69824B (fi) 1985-12-31
FI69824C FI69824C (fi) 1986-05-26

Family

ID=24713840

Family Applications (1)

Application Number Title Priority Date Filing Date
FI771111A FI69824C (fi) 1976-04-12 1977-04-06 Foerfarande foer inhibering av proliferation av filamentoes bimassa vid drift av ett aktivt slam-system

Country Status (17)

Country Link
US (1) US4056465A (ro)
JP (1) JPS52124768A (ro)
AT (1) AT361412B (ro)
AU (1) AU503074B2 (ro)
BE (1) BE853318A (ro)
CA (1) CA1078977A (ro)
CH (1) CH629730A5 (ro)
DE (1) DE2715256A1 (ro)
DK (1) DK153832C (ro)
FI (1) FI69824C (ro)
FR (1) FR2348159A1 (ro)
GB (1) GB1543528A (ro)
HK (1) HK38082A (ro)
IL (1) IL51663A (ro)
NL (1) NL7703788A (ro)
SE (1) SE436739C (ro)
ZA (1) ZA771732B (ro)

Families Citing this family (113)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4160724A (en) * 1976-11-12 1979-07-10 Ontario Research Foundation Waste water treatment
NL7702236A (nl) * 1977-03-02 1978-09-05 Rijkslandbouwhogeschool Werkwijze voor het verwijderen van organische stoffen en stikstofverbindingen uit afvalwater.
NL7705427A (nl) * 1977-05-17 1978-11-21 Stamicarbon Werkwijze en inrichting voor het biologisch zuiveren van afvalwater.
JPS544466A (en) * 1977-06-11 1979-01-13 Daido Steel Co Ltd Method of treating waste water
US4210528A (en) * 1977-11-11 1980-07-01 Thetford Corporation Closed loop waste treatment and water recycling toilet system
DE2757742B2 (de) * 1977-12-23 1979-10-18 Linde Ag, 6200 Wiesbaden Verfahren zur biologischen Reinigung von Abwasser
JPS54103254A (en) * 1978-02-01 1979-08-14 Hitachi Chem Co Ltd Method of treating sugar containing waste water
JPS54136755A (en) * 1978-04-15 1979-10-24 Osaka Gas Co Ltd Active sludge disposal process for waste water
US4271026A (en) * 1979-10-09 1981-06-02 Air Products And Chemicals, Inc. Control of activated sludge wastewater treating process for enhanced phosphorous removal
US4257897A (en) * 1979-10-26 1981-03-24 Air Products And Chemicals, Inc. Process for reabsorption and retention of phosphorous by activated biomass
JPS56150494A (en) * 1980-04-24 1981-11-20 Ebara Infilco Co Ltd Disposal of organic waste water
JPS56150500A (en) * 1980-04-25 1981-11-20 Ebara Infilco Co Ltd Disposal of sludge
JPS571491A (en) * 1980-06-06 1982-01-06 Kurita Water Ind Ltd Disposal of sewage
US4599167A (en) * 1980-09-15 1986-07-08 Bacardi Corporation Apparatus for treatment of waste water
JPS57167797A (en) * 1981-04-07 1982-10-15 Showa Denko Kk Removing and recovering method for phosphorus in waste water
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
US4731185A (en) * 1981-07-13 1988-03-15 Air Products And Chemicals, Inc. Biological wastewater treating system
JPS5861888A (ja) * 1981-10-06 1983-04-13 Kubota Ltd 廃水処理方法
JPS5861886A (ja) * 1981-10-06 1983-04-13 Kubota Ltd 廃水を処理する方法
DE3206440A1 (de) * 1982-02-23 1983-09-01 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur biologischen reinigung von phosphathaltigem abwasser
EP0099421B1 (en) * 1982-07-21 1986-09-17 Air Products And Chemicals, Inc. Biological wastewater treating system
US4488968A (en) * 1983-03-07 1984-12-18 Air Products And Chemicals, Inc. Removal of phosphates and BOD from wastewaters
US4488967A (en) * 1983-03-07 1984-12-18 Air Products And Chemicals, Inc. Treatment of wastewater containing phosphorus compounds
US4556491A (en) * 1983-09-29 1985-12-03 Air Products And Chemicals, Inc. Avoidance of rising sludge in biological wastewater treatment clarifiers
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
DE3534716A1 (de) * 1985-09-28 1987-05-14 Eppler Alwin Verfahren zur biologischen denitrifizierung von wasser und vorrichtung zur durchfuehrung dieses verfahrens
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
US5252214A (en) * 1987-02-27 1993-10-12 Gunter Lorenz Biological dephosphatization and (de)nitrification
US4839052A (en) * 1987-03-10 1989-06-13 Council For Scientific And Industrial Research Biological treatment of water
AU1707288A (en) * 1987-04-21 1988-12-02 Hampton Roads Sanitation District High-rate biological waste water treatment process using activated sludge recycle
JP2661093B2 (ja) * 1988-02-01 1997-10-08 味の素株式会社 活性汚泥法による廃水処理方法
US4961854A (en) * 1988-06-30 1990-10-09 Envirex Inc. Activated sludge wastewater treatment process
US5013441A (en) * 1988-07-20 1991-05-07 Goronszy Mervyn C Biological nutrient removal with sludge bulking control in a batch activated sludge system
KR910003004B1 (ko) * 1989-01-28 1991-05-15 풍림산업 주식회사 생물학적 질소와 인의 제거법 및 그 처리장치
US4919815A (en) * 1989-02-06 1990-04-24 Zimpro/Passavant Inc. Two-stage anaerobic/aerobic treatment process
US4975197A (en) * 1989-05-03 1990-12-04 Envirex Inc. Orbal wastewater treatment process
DE3925091A1 (de) * 1989-07-28 1991-01-31 Eberhard Dipl Biol Kuhn Verfahren zur biologischen behandlung von abwasser und anlage sowie reaktor zur durchfuehrung des verfahrens
US5128040A (en) * 1989-08-02 1992-07-07 Polytechnic University Wastewater treatment process
US5733455A (en) * 1992-07-06 1998-03-31 Polytechnic University Wastewater treatment process
US5651891A (en) * 1989-08-02 1997-07-29 Polytechnic University Wastewater treatment process
JPH04131193A (ja) * 1990-09-25 1992-05-01 Shikoku Chem Corp 廃水処理における糸状性バルキングを解消する方法
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
US5160043A (en) * 1991-09-09 1992-11-03 I. Kruger, Inc. Method of exhausting dissolved oxygen in a nitrogen removal wastewater treatment process
US5667688A (en) * 1991-12-23 1997-09-16 T. Kruger Systems As Process for the purification of polluted water
DK206291D0 (da) * 1991-12-23 1991-12-23 Krueger I Systems As Fremgangsmaade til rensning af forurenet vand
KR950704199A (ko) * 1992-11-06 1995-11-17 미카엘 크니히트 폐수에서 생물학적으로 인을 제거하는 방법
US5380438A (en) * 1993-08-17 1995-01-10 City Of Atlanta Treatment of wastewater through enhanced biological phosphorus removal
US5792650A (en) * 1993-09-03 1998-08-11 Ebara Corporation Method for treating waste water
US5582734A (en) * 1993-09-14 1996-12-10 H. David Stensel Oxidation ditch modification and automated control system for nitrogen removal and sludge settling improvements
US5558686A (en) * 1993-10-19 1996-09-24 Alpha-Omega Energia, Inc. Method for making a fuel product
US5496472A (en) * 1993-12-20 1996-03-05 Tetra Technologies, Inc. Method and apparatus for denitrification of wastewater
AUPM957194A0 (en) * 1994-11-18 1994-12-15 Act Electricity & Water Wastewater treatment method and plant
DE4444335C2 (de) * 1994-12-13 2002-02-07 Shw Hoelter Wassertechnik Gmbh Biologisches Abwasserreinigungsverfahren mit Belebtschlamm und Kompaktabwasserreinigungsanlage
US5603833A (en) * 1995-01-13 1997-02-18 Miller; Stanley D. Biological removal of phosphorus and nitrogen from wastewater using a stressed contact zone and a luxury contact zone
US5736047A (en) * 1995-02-28 1998-04-07 Lemna Corporation Hybrid biological nutrient removal system
DE19522658C1 (de) * 1995-06-22 1996-12-05 Nordenskjoeld Reinhart Von Verfahren und Anlage zum Reinigen von Abwasser
US5658458A (en) * 1995-11-08 1997-08-19 Micronair, Inc. Apparatus for removing suspended inert solids from a waste stream
US5626755A (en) * 1995-11-08 1997-05-06 Micronair, Inc. Method and apparatus for waste digestion using multiple biological processes
US5601719A (en) * 1996-01-11 1997-02-11 Black & Veatch Biological nutrient removal process for treatment of wastewater
US5651892A (en) * 1996-03-14 1997-07-29 Deep Shaft Technology Inc. Biodegradeable effluent nutrient removal
US5820760A (en) * 1997-06-30 1998-10-13 Competitive Technologies Of Pa, Inc. Process for reducing nitrous oxide emission from waste water treatment
ATE222219T1 (de) * 1997-09-16 2002-08-15 Krueger As I Verfahren zur biologischen reinigung von abwasser unter zurückhaltung von schlamm
JP3370576B2 (ja) * 1997-10-09 2003-01-27 シャープ株式会社 超純水製造装置
AU2003236421B2 (en) * 1998-03-04 2006-12-14 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
ES2315009T3 (es) * 1998-03-04 2009-03-16 Mikkel G. Mandt Sistemas reactores con cargas secuenciales de mezcla anoxica de equilibrio.
ES2253878T3 (es) * 1998-03-31 2006-06-01 Samsung Engineering Co., Ltd. Metodo de tratamiento de aguas residuales para separar materia organica y nitrogeno.
AU767883B2 (en) * 1998-06-04 2003-11-27 New Zealand Forest Research Institute Limited Wastewater treatment process
US6387254B1 (en) * 1998-09-03 2002-05-14 Nkk Corporation Apparatus for wastewater treatment
US6485645B1 (en) 1999-07-20 2002-11-26 Zenon Environmental Inc Biological process for removing phosphorus involving a membrane filter
AU6144600A (en) 1999-07-20 2001-02-05 Zenon Environmental Inc. Biological process for removing phosphorus involving a membrane filter
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
US6592762B2 (en) 2001-08-29 2003-07-15 United States Filter Corporation Process for treating BOD-containing wastewater
US20050037481A9 (en) * 2001-12-10 2005-02-17 Patterson Gregory S. Organic waste treatment system
US6712970B1 (en) * 2002-01-11 2004-03-30 Enviroquip, Inc. Sewage treatment process with phosphorus removal
KR100419431B1 (ko) * 2002-02-28 2004-02-18 삼성엔지니어링 주식회사 질소 및 인을 제거하기 위한 폐수처리 장치 및 폐수처리방법
US7172699B1 (en) 2004-10-13 2007-02-06 Eimco Water Technologies Llc Energy efficient wastewater treatment for nitrogen and phosphorus removal
US7344643B2 (en) 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
DE102005037295A1 (de) * 2005-08-08 2007-02-15 Dieter Frankenberger Kompakt Kläranlagen
CN101300196A (zh) 2005-09-02 2008-11-05 西门子水处理技术公司 从低产废水处理工艺中筛分惰性固体
CN100361909C (zh) * 2005-10-20 2008-01-16 彭永臻 A/o生物脱氮反应器、硝化过程的调节方法及其在线模糊控制装置、方法
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
US7147778B1 (en) 2006-01-05 2006-12-12 I. Kruger Inc. Method and system for nitrifying and denitrifying wastewater
US7473364B2 (en) 2006-03-07 2009-01-06 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
WO2008141113A1 (en) * 2007-05-10 2008-11-20 O'regan Patrick T Jr Systems, methods and components for water treatment and remediation
WO2009026352A1 (en) * 2007-08-20 2009-02-26 Jon Inman Sattler System and method for processing wastewater
US7731842B2 (en) * 2007-09-19 2010-06-08 Brentwood Industries, Inc. Submerged fixed film anoxic bioreactor
US8894856B2 (en) * 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
WO2009120384A2 (en) 2008-03-28 2009-10-01 Siemens Water Technologies Corp. Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
WO2010062724A2 (en) * 2008-11-02 2010-06-03 Nobska Technologies, Inc Water treatment systems with communications network links and methods
US20100243558A1 (en) * 2009-03-25 2010-09-30 Alexander Ekster Maintaining activated sludge in suspension
WO2011068931A1 (en) * 2009-12-03 2011-06-09 Siemens Industry, Inc. Systems and methods for nutrient removal in biological treatment systems
US8568592B2 (en) 2010-01-13 2013-10-29 Dtec Systems Llc Method of biological phosphorus removal with maximum nitrogen removal in wastewater
WO2011133738A1 (en) 2010-04-21 2011-10-27 Siemens Pte. Ltd. Methods and systems for treating wastewater
MX2013001094A (es) * 2010-07-26 2013-06-03 Acciona Agua S A U Sistema y procedimiento para el tratamiento de aguas.
WO2012024279A1 (en) 2010-08-18 2012-02-23 Siemens Industry, Inc. Contact-stabilization/prime-float hybrid
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
JP5665502B2 (ja) * 2010-11-22 2015-02-04 メタウォーター株式会社 下水処理システム
US9969635B2 (en) 2011-11-18 2018-05-15 Infilco Degremont, Inc. Downflow denitrification system
US8864993B2 (en) 2012-04-04 2014-10-21 Veolia Water Solutions & Technologies Support Process for removing ammonium from a wastewater stream
US9242882B2 (en) 2012-11-27 2016-01-26 Hampton Roads Sanitation District Method and apparatus for wastewater treatment using gravimetric selection
US20140238931A1 (en) 2013-02-26 2014-08-28 Veolia Water Solutions & Technologies Support Process for Treating Municiple Wastewater Employing Two Sequencing Biofilm Batch Reactors
WO2014182533A1 (en) 2013-05-06 2014-11-13 Erdogan Argun O Wastewater biosorption with dissolved air flotation
MY174371A (en) 2014-06-30 2020-04-13 Hampton Roads Sanitation Distr Method and apparatus for wastewater treatment using external selection
WO2016014723A1 (en) 2014-07-23 2016-01-28 Hampton Roads Sanitation Distric A method for deammonification process control using ph, specific conductivity, or ammonia
WO2019236589A1 (en) * 2018-06-05 2019-12-12 Evoqua Water Technologies Llc Combination of dissolved air flotation and fixed film bioreactor solutions
CA3163327C (en) 2020-01-06 2023-04-25 The Research Foundation For The State University Of New York Bioreactor system and method for nitrification and denitrification
MX2023010727A (es) 2021-03-12 2024-02-06 Hampton Roads Sanitation Distr Metodo y aparato para deseleccion multiple en tratamiento de aguas residuales.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517792A (en) * 1944-04-10 1950-08-08 Leon S Kraus Method of and apparatus for treatment of sewage
DE1658083A1 (de) * 1951-01-28 1970-02-05 Dr Dietz Kollatsch Behandlungsverfahren fuer gaer- und faulfaehige Abwaesser
US3764523A (en) * 1972-05-01 1973-10-09 Union Carbide Corp Nitrification of bod-containing water
CA968474A (en) * 1972-07-31 1975-05-27 David C. Climenhage Treatment of nitrogenous effluents
US3964998A (en) * 1972-08-04 1976-06-22 The South African Inventions Development Corporation Improvements in and relating to waste water treatment
ZA725371B (en) * 1972-08-04 1974-03-27 South African Inventions Improvements in and relating to waste water treatment
US3864246A (en) * 1973-01-24 1975-02-04 Air Prod & Chem Non-bulking activated sludge process
US3953327A (en) * 1973-04-26 1976-04-27 Central Contra Costa Sanitary District Sewage treatment process
US3939068A (en) * 1973-12-06 1976-02-17 The United States Of America As Represented By The Secretary Of The Army Process for treating waste water containing cellulose nitrate particles
US3994802A (en) * 1975-04-16 1976-11-30 Air Products And Chemicals, Inc. Removal of BOD and nitrogenous pollutants from wastewaters

Also Published As

Publication number Publication date
NL7703788A (nl) 1977-10-14
GB1543528A (en) 1979-04-04
AU2345877A (en) 1978-09-28
FI69824C (fi) 1986-05-26
IL51663A0 (en) 1977-05-31
JPS5642997B2 (ro) 1981-10-08
CA1078977A (en) 1980-06-03
FR2348159B1 (ro) 1982-10-29
DE2715256A1 (de) 1977-10-27
DE2715256C2 (ro) 1987-12-17
JPS52124768A (en) 1977-10-20
FI69824B (fi) 1985-12-31
CH629730A5 (de) 1982-05-14
US4056465A (en) 1977-11-01
ZA771732B (en) 1978-03-29
SE436739B (sv) 1985-01-21
AT361412B (de) 1981-03-10
SE436739C (sv) 1987-03-23
AU503074B2 (en) 1979-08-23
BE853318A (nl) 1977-08-01
ATA248777A (de) 1979-03-15
DK153832C (da) 1989-01-30
HK38082A (en) 1982-09-03
IL51663A (en) 1981-09-13
FR2348159A1 (fr) 1977-11-10
DK141877A (da) 1977-10-13
SE7704090L (sv) 1977-10-13
DK153832B (da) 1988-09-12

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Owner name: I.KRUGER INC.

MA Patent expired

Owner name: I. KRUGER INC.