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GB2298195A - Methods and apparatus for using micro-organisms to treat organic material found in waste water - Google Patents

Methods and apparatus for using micro-organisms to treat organic material found in waste water

Info

Publication number
GB2298195A
GB2298195A GB9609460A GB9609460A GB2298195A GB 2298195 A GB2298195 A GB 2298195A GB 9609460 A GB9609460 A GB 9609460A GB 9609460 A GB9609460 A GB 9609460A GB 2298195 A GB2298195 A GB 2298195A
Authority
GB
United Kingdom
Prior art keywords
bacteria
waste water
organic material
reaction vessel
reaction zone
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
GB9609460A
Other versions
GB9609460D0 (en
GB2298195B (en
Inventor
Michael Ian Lees
Michael Littlewood
Donald Reid
Alan Stephen Ward
Lynne Maclennan
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.)
EA Technology Ltd
Original Assignee
EA Technology Ltd
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 EA Technology Ltd filed Critical EA Technology Ltd
Publication of GB9609460D0 publication Critical patent/GB9609460D0/en
Publication of GB2298195A publication Critical patent/GB2298195A/en
Application granted granted Critical
Publication of GB2298195B publication Critical patent/GB2298195B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Activated Sludge Processes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Organic material in waste water is treated by aerobic digestion by bacteria in a reaction vessel. A proportion of the bacteria in the reaction vessel are deactivated to modify the concentration of active bacteria. This deactivation is accomplished by providing a region of high mechanical shear stress in the liquid so that flocs of bacteria are broken up. Resulting loose bacterial cells and small doc particles encourage an increase in the population of higher life forms, protozoa and rotifers, which predate on these lone cells and small particles. By controlling the level of predation by higher life forms, the effective death rate of bacteria is increased so that the overall biomass in the reaction zone can be maintained constant even though sufficient organic material is supplied in the waste water for the bacterial population to respire as in a growth phase. The resulting high respiration rate minimises the overall production of sludge without excessive residence times in the reaction zone.
GB9609460A 1993-11-19 1994-11-21 Methods and apparatus for using micro-organisms to treat organic material found in waste water Expired - Fee Related GB2298195B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9323870A GB9323870D0 (en) 1993-11-19 1993-11-19 Methods and apparatus for using micro-organisms to treat organic material found in waste water
PCT/GB1994/002556 WO1995013990A1 (en) 1993-11-19 1994-11-21 Methods and apparatus for using micro-organisms to treat organic material found in waste water

Publications (3)

Publication Number Publication Date
GB9609460D0 GB9609460D0 (en) 1996-07-10
GB2298195A true GB2298195A (en) 1996-08-28
GB2298195B GB2298195B (en) 1997-07-30

Family

ID=10745420

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9323870A Pending GB9323870D0 (en) 1993-11-19 1993-11-19 Methods and apparatus for using micro-organisms to treat organic material found in waste water
GB9609460A Expired - Fee Related GB2298195B (en) 1993-11-19 1994-11-21 Methods and apparatus for using micro-organisms to treat organic material found in waste water

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9323870A Pending GB9323870D0 (en) 1993-11-19 1993-11-19 Methods and apparatus for using micro-organisms to treat organic material found in waste water

Country Status (3)

Country Link
AU (1) AU1071895A (en)
GB (2) GB9323870D0 (en)
WO (1) WO1995013990A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353792A (en) * 1999-09-06 2001-03-07 Richard Geoffrey Mattison Bioremediation process
CN1914122B (en) * 2004-02-02 2012-09-05 栗田工业株式会社 Biological Treatment of Organic Drainage

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766813B1 (en) * 1997-08-01 1999-10-01 Degremont PROCESS AND DEVICE FOR WASTEWATER TREATMENT INCLUDING ADDITIONAL TREATMENT OF SLUDGE BY OZONATION
US6203701B1 (en) 1998-02-05 2001-03-20 Thermal Process Systems, Llc Process and apparatus for treating biosolids from wastewater treatment
US5948261A (en) 1998-02-05 1999-09-07 Pressley; Richard L. Process for treating biosolids from wastewater treatment
US6719903B1 (en) 1998-02-05 2004-04-13 Thermal Process Systems, Llc Process and apparatus for treating biosolids from wastewater treatment
US6168717B1 (en) 1998-02-05 2001-01-02 Thermal Process Systems, Llc Process for controlling foam in a treatment reactor
CA2448674C (en) 2001-05-31 2013-01-08 Biothane Corporation Anaerobic digestion apparatus, methods for anaerobic digestion and for minimizing the use of inhibitory polymers in digestion
FR2864069B1 (en) * 2003-12-17 2006-05-05 Air Liquide METHOD FOR REDUCING SLURRY FROM WASTEWATER TREATMENT BY OXYGENATION AND MECHANICAL ACTION
AU2009319721B2 (en) * 2008-11-28 2016-01-14 Corbion Biotech, Inc. Manufacturing of tailored oils in recombinant heterotrophic microorganisms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915840A (en) * 1988-06-07 1990-04-10 Bioprocess Engineering, Inc. Process for sludge reduction in an aerobic sludge generating waste treatment system
US4976863A (en) * 1989-01-26 1990-12-11 Pec Research, Inc. Wastewater treatment process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3351047B2 (en) * 1993-09-27 2002-11-25 栗田工業株式会社 Treatment method of biological sludge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915840A (en) * 1988-06-07 1990-04-10 Bioprocess Engineering, Inc. Process for sludge reduction in an aerobic sludge generating waste treatment system
US4976863A (en) * 1989-01-26 1990-12-11 Pec Research, Inc. Wastewater treatment process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353792A (en) * 1999-09-06 2001-03-07 Richard Geoffrey Mattison Bioremediation process
CN1914122B (en) * 2004-02-02 2012-09-05 栗田工业株式会社 Biological Treatment of Organic Drainage

Also Published As

Publication number Publication date
AU1071895A (en) 1995-06-06
WO1995013990A1 (en) 1995-05-26
GB9609460D0 (en) 1996-07-10
GB9323870D0 (en) 1994-01-05
GB2298195B (en) 1997-07-30

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081121