ATE130526T1 - Verfahren zur behandlung von abwasser. - Google Patents

Verfahren zur behandlung von abwasser.

Info

Publication number
ATE130526T1
ATE130526T1 AT92920583T AT92920583T ATE130526T1 AT E130526 T1 ATE130526 T1 AT E130526T1 AT 92920583 T AT92920583 T AT 92920583T AT 92920583 T AT92920583 T AT 92920583T AT E130526 T1 ATE130526 T1 AT E130526T1
Authority
AT
Austria
Prior art keywords
disclosed
treating wastewater
vertially
supernatent
affluent
Prior art date
Application number
AT92920583T
Other languages
German (de)
English (en)
Inventor
D Thomas Murphy
Original Assignee
D Thomas Murphy
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 D Thomas Murphy filed Critical D Thomas Murphy
Application granted granted Critical
Publication of ATE130526T1 publication Critical patent/ATE130526T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2444—Discharge mechanisms for the classified liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • 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
    • C02F3/006—Regulation methods for biological treatment
    • 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
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
    • 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
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1263—Sequencing batch reactors [SBR]
    • 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
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • 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
    • C02F3/302—Nitrification and denitrification treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Activated Sludge Processes (AREA)
  • Physical Water Treatments (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Removal Of Specific Substances (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Control Of Electric Motors In General (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
AT92920583T 1991-09-03 1992-09-03 Verfahren zur behandlung von abwasser. ATE130526T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/753,860 US5186821A (en) 1991-09-03 1991-09-03 Wastewater treatment process with cooperating velocity equalization, aeration and decanting means
CA 2095731 CA2095731C (en) 1991-09-03 1992-09-03 Wastewater treatment process

Publications (1)

Publication Number Publication Date
ATE130526T1 true ATE130526T1 (de) 1995-12-15

Family

ID=25676156

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92920583T ATE130526T1 (de) 1991-09-03 1992-09-03 Verfahren zur behandlung von abwasser.

Country Status (15)

Country Link
US (1) US5186821A (enExample)
EP (1) EP0575567B1 (enExample)
AT (1) ATE130526T1 (enExample)
AU (1) AU673656B2 (enExample)
CA (1) CA2095731C (enExample)
DE (1) DE69206261T2 (enExample)
DK (1) DK0575567T3 (enExample)
ES (1) ES2082506T3 (enExample)
FI (1) FI933177A7 (enExample)
GR (1) GR3019039T3 (enExample)
HU (1) HU214473B (enExample)
MW (1) MW13093A1 (enExample)
NO (1) NO931999D0 (enExample)
RU (1) RU2097102C1 (enExample)
WO (1) WO1993004759A1 (enExample)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207896A (en) * 1990-02-09 1993-05-04 Norwalk Wastewater Equipment Company Wastewater treatment mechanism
USD347257S (en) 1991-06-20 1994-05-24 Mcgrew Jr Henry E Septic tank for holding sewerage
US5234580A (en) * 1991-09-03 1993-08-10 Murphy D Thomas Decanting apparatus with float supported submerged pump
US5384049A (en) * 1991-09-03 1995-01-24 Murphy; D. Thomas Wastewater treatment process
US5759415A (en) * 1991-10-02 1998-06-02 Vortechnics, Inc. Method and apparatus for separating floating and non-floating particulate from rainwater drainage
US5316671A (en) * 1993-01-21 1994-05-31 Murphy D Thomas Submersible aeration train and aeration apparatus for biological purification of sewage
US5374353A (en) * 1993-01-21 1994-12-20 Murphy; D. Thomas Aeration train and aeration apparatus for biological purification of wastewater
US5421995A (en) * 1993-07-01 1995-06-06 Jmo Holding, Inc. Sludge blanket level detector suspended from floating decanter
WO1995019938A1 (en) * 1994-01-24 1995-07-27 Murphy Thomas D Wastewater treatment process
AUPM435594A0 (en) * 1994-03-11 1994-03-31 Crc For Waste Management And Pollution Control Limited Method of operating sequencing batch reactors
US5468375A (en) * 1994-05-09 1995-11-21 Nova Power Systems, Ltd. Wastewater pretreatment tank assembly
SE504228C2 (sv) * 1995-04-24 1996-12-09 Team Aqua Laeckeby Ab Dekanteringsanordning
US6638424B2 (en) * 2000-01-19 2003-10-28 Jensen Enterprises Stormwater treatment apparatus
DE69740003D1 (de) * 1996-12-20 2010-11-04 Siemens Water Tech Corp Reinigungsmethode
EP0963352B1 (de) * 1997-02-28 2001-11-21 Rudolf Kahr Modulare kläranlage und verfahren zu ihrem betrieb
US6047724A (en) * 1998-02-11 2000-04-11 Nurse, Jr.; Harry L. Risers for a waste water treatment facility
US6012020A (en) * 1998-05-21 2000-01-04 Gardell; Steven E Apparatus and method for monitoring the condition of septic tanks
BR9912387A (pt) * 1998-07-24 2001-04-24 Paques Bio Syst Bv Processo para o tratamento biológico de água
CA2345694C (en) 1998-09-28 2008-12-09 Glen D. Lindbo Wastewater treatment tank with influent gates and pre-react zone with an outwardly flared lower portion
US6110383A (en) * 1999-01-28 2000-08-29 Coombs Industrial Services, Inc. Oil/water separator
DE19907980C2 (de) * 1999-02-25 2002-09-05 Markus Baumann Integrierte Vorrichtung zum Behandeln von Abwasser in Kleinkläranlagen, insbesondere Einbecken-Kläranlagen
US6315131B1 (en) * 1999-03-22 2001-11-13 Universal Separators, Inc. Multi-directional flow gravity Separator
US6261452B1 (en) 1999-12-23 2001-07-17 American Manufacturing Company, Inc. Laminar flow collar for use in a wastewater management system
US7638065B2 (en) * 2000-01-19 2009-12-29 Jensen Precast Stormwater treatment apparatus and method
US6350374B1 (en) 2000-01-19 2002-02-26 Jensen Enterprises, Inc. Stormwater treatment apparatus
FR2808455B1 (fr) * 2000-05-03 2003-02-14 Schlumberger Services Petrol Installation et procede pour la separation d'effluents multiphasiques
US6409914B1 (en) 2000-08-22 2002-06-25 Crystal River Industries, Inc. Waste treatment unit
USD445477S1 (en) 2000-11-14 2001-07-24 John Everett Pomier Waste water treatment tank
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
US7247238B2 (en) * 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
US7160474B2 (en) * 2004-11-08 2007-01-09 Darin Merle Harding Method and apparatus for removing cuttings from drilling fluids
US7544302B2 (en) * 2004-11-08 2009-06-09 Darin Merle Harding Method and apparatus for removing cuttings from drilling fluids
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
US7938966B2 (en) * 2002-10-10 2011-05-10 Siemens Water Technologies Corp. Backwash method
WO2005021140A1 (en) 2003-08-29 2005-03-10 U.S. Filter Wastewater Group, Inc. Backwash
NZ546959A (en) 2003-11-14 2008-03-28 Siemens Water Tech Corp Improved cleaning method for a porous membrane filtration module
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
US7243802B2 (en) * 2004-05-13 2007-07-17 Enviro Enterprises, Inc. Inlet structure for clarifiers
CA2579168C (en) * 2004-09-07 2015-06-23 Siemens Water Technologies Corp. Membrane filtration with reduced volume cleaning step
AU2005284677B2 (en) 2004-09-14 2010-12-23 Evoqua Water Technologies Llc Methods and apparatus for removing solids from a membrane module
US8377305B2 (en) 2004-09-15 2013-02-19 Siemens Industry, Inc. Continuously variable aeration
NZ555987A (en) 2004-12-24 2009-08-28 Siemens Water Tech Corp Simple gas scouring method and apparatus
CA2591408C (en) 2004-12-24 2015-07-21 Siemens Water Technologies Corp. Cleaning in membrane filtration systems
DE102005007408A1 (de) 2005-02-18 2006-08-24 Holm, Niels Christian, Dr. Verfahren zur Verbesserung der Denitrifikation und Bio-P-Elimination beim SBR-Verfahren
JP2008539054A (ja) 2005-04-29 2008-11-13 シーメンス・ウォーター・テクノロジーズ・コーポレイション 膜フィルターのための化学洗浄
CN101287538B (zh) 2005-08-22 2013-03-06 西门子工业公司 使用歧管以减少回洗的水过滤装置
WO2007044415A2 (en) * 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Method and apparatus for treating wastewater
WO2007054912A1 (en) * 2005-11-10 2007-05-18 Paterson & Cooke Consulting Engineers (Proprietary) Limited A de-watering apparatus
WO2008051546A2 (en) 2006-10-24 2008-05-02 Siemens Water Technologies Corp. Infiltration/inflow control for membrane bioreactor
US7674372B2 (en) * 2007-01-26 2010-03-09 Graves Jan D Wastewater flow equalization system and method
WO2008123972A1 (en) 2007-04-02 2008-10-16 Siemens Water Technologies Corp. Improved infiltration/inflow control for membrane bioreactor
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
CA2688455C (en) 2007-05-29 2019-12-03 Evoqua Water Technologies Llc Pulsed random two phase gas/liquid flow for cleaning membrane surfaces
US7972505B2 (en) * 2008-07-22 2011-07-05 Trans Terra Corporation Primary equalization settling tank
KR101614520B1 (ko) 2008-07-24 2016-04-21 에보쿠아 워터 테크놀로지스 엘엘씨 막 여과 모듈용 프레임 시스템
US8652331B2 (en) 2008-08-20 2014-02-18 Siemens Water Technologies Llc Membrane system backwash energy efficiency
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
ES2738898T3 (es) 2010-04-30 2020-01-27 Evoqua Water Tech Llc Dispositivo de distribución de flujo de fluido
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
WO2013039582A1 (en) * 2011-09-16 2013-03-21 Babak Rezania Methods and apparatus for nitrogen removal from wastewater
AU2013200808B2 (en) 2011-09-30 2014-11-06 Evoqua Water Technologies Llc Isolation valve
SG11201401089PA (en) 2011-09-30 2014-04-28 Evoqua Water Technologies Llc Improved manifold arrangement
WO2014004645A1 (en) 2012-06-28 2014-01-03 Siemens Industry, Inc. A potting method
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
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
CN104003571B (zh) * 2013-02-27 2016-04-06 宁波市恒洁水务发展有限公司 生物脱氮系统的工艺
RU2553875C2 (ru) * 2013-08-16 2015-06-20 Сергей Васильевич Лузан Устройство для насыщения воды кислородом
WO2015050764A1 (en) 2013-10-02 2015-04-09 Evoqua Water Technologies Llc A method and device for repairing a membrane filtration module
EP3322511B1 (en) 2015-07-14 2022-09-07 Rohm & Haas Electronic Materials Singapore Pte. Ltd Aeration device for filtration system
WO2018057876A1 (en) * 2016-09-22 2018-03-29 Flow Control Llc. Shower drain box
CA3107770C (en) 2018-08-16 2023-09-05 Emd Millipore Corporation Closed bioprocessing device
CN112221214A (zh) * 2020-10-12 2021-01-15 湖南创大玉兔化工有限公司 澄清钛液与沉淀泥浆自动分层吸送装置
RU209814U1 (ru) * 2021-10-04 2022-03-23 Роман Николаевич Михайлов Установка биологической очистки стоков

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140059A (en) * 1936-05-12 1938-12-13 Simonsen Arntz Decanting mechanism
US3907672A (en) * 1972-04-21 1975-09-23 George A Milne Aerobic sewage digestion system
US3834536A (en) * 1973-10-10 1974-09-10 Northern Purification Services Aerobic wastewater treatment apparatus
US4278541A (en) * 1978-03-14 1981-07-14 Amstar Corporation Separator employing an annular vertical feedwell with associated concentric annular baffle plate and method of using same to separate solids from liquids
US4230578A (en) * 1979-04-09 1980-10-28 Jet, Inc. Sewage effluent volume control and alarm arrangement for pressurized sewage disposal system
US4695376A (en) * 1986-10-20 1987-09-22 Aqua-Aerobic Systems, Inc. Floating decanter
US5104528A (en) * 1990-09-24 1992-04-14 Christie Stanley E Floating decanter

Also Published As

Publication number Publication date
HU9301908D0 (en) 1993-11-29
ES2082506T3 (es) 1996-03-16
FI933177A0 (fi) 1993-07-12
DE69206261T2 (de) 1996-07-04
EP0575567A1 (en) 1993-12-29
MW13093A1 (en) 1994-10-12
DE69206261D1 (de) 1996-01-04
EP0575567B1 (en) 1995-11-22
RU2097102C1 (ru) 1997-11-27
EP0575567A4 (enExample) 1994-01-19
CA2095731C (en) 1998-12-08
DK0575567T3 (da) 1996-04-09
HU214473B (hu) 1998-03-30
AU673656B2 (en) 1996-11-21
FI933177A7 (fi) 1993-07-12
US5186821A (en) 1993-02-16
WO1993004759A1 (en) 1993-03-18
AU2652792A (en) 1993-04-05
NO931999D0 (no) 1993-06-02
CA2095731A1 (en) 1994-03-04
HUT68998A (en) 1995-08-28
GR3019039T3 (en) 1996-05-31

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee