GB1221550A - Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater - Google Patents

Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater

Info

Publication number
GB1221550A
GB1221550A GB3497168A GB3497168A GB1221550A GB 1221550 A GB1221550 A GB 1221550A GB 3497168 A GB3497168 A GB 3497168A GB 3497168 A GB3497168 A GB 3497168A GB 1221550 A GB1221550 A GB 1221550A
Authority
GB
United Kingdom
Prior art keywords
production
wastewater
purification
reducing
sludge
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
GB3497168A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1221550A publication Critical patent/GB1221550A/en
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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Activated Sludge Processes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

1,221,550. Treating waste water. FARBWERKE HOECHST A.G. 22 July, 1968 [21 July, 1967], No. 34971/68. Heading C1C Waste water is treated in an activated sludge plant by biologically decomposing impurities in the presence of a bacteriostatically effective concentration of a disinfectant, whereby the production of excess sludge is prevented. The disinfectant may be a phenol, particularly a nitrophenol, a soluble cyanide, e.g. potassium cyanide, an organotin compound, e.g. triphenyl tin acetate, mycelium refuse from the manufacture of antibiotics, or toluene.
GB3497168A 1967-07-21 1968-07-22 Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater Expired GB1221550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1967F0053021 DE1280764B (en) 1967-07-21 1967-07-21 Process for reducing excess sludge production in activated sludge plants for wastewater treatment

Publications (1)

Publication Number Publication Date
GB1221550A true GB1221550A (en) 1971-02-03

Family

ID=7105930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3497168A Expired GB1221550A (en) 1967-07-21 1968-07-22 Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater

Country Status (7)

Country Link
AT (1) AT284028B (en)
CH (1) CH507163A (en)
DE (1) DE1280764B (en)
ES (1) ES356249A1 (en)
FR (1) FR1579720A (en)
GB (1) GB1221550A (en)
NL (1) NL6810273A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004113236A2 (en) * 2003-06-20 2004-12-29 Rhodia Uk Ltd Uncoupling agents
WO2005123607A1 (en) * 2004-06-21 2005-12-29 Rhodia Uk Limited Improvement of sludge quality
JP2006159130A (en) * 2004-12-09 2006-06-22 Toyohashi Univ Of Technology Method for suppressing generation of excess sludge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004113236A2 (en) * 2003-06-20 2004-12-29 Rhodia Uk Ltd Uncoupling agents
WO2004113236A3 (en) * 2003-06-20 2005-02-10 Rhodia Cons Spec Ltd Uncoupling agents
JP2006527652A (en) * 2003-06-20 2006-12-07 ロディア ユーケイ リミテッド Uncoupler
AU2004249501B2 (en) * 2003-06-20 2007-11-29 Rhodia Uk Ltd Uncoupling agents
US7780859B2 (en) 2003-06-20 2010-08-24 Rhodia Operations Uncoupling agents
WO2005123607A1 (en) * 2004-06-21 2005-12-29 Rhodia Uk Limited Improvement of sludge quality
AU2005254315B2 (en) * 2004-06-21 2009-04-09 Rhodia Uk Limited Improvement of sludge quality
US7638055B2 (en) 2004-06-21 2009-12-29 Rhodia Operations Sludge quality
JP2006159130A (en) * 2004-12-09 2006-06-22 Toyohashi Univ Of Technology Method for suppressing generation of excess sludge
JP4626286B2 (en) * 2004-12-09 2011-02-02 国立大学法人豊橋技術科学大学 Control method of excess sludge generation

Also Published As

Publication number Publication date
NL6810273A (en) 1969-01-23
DE1280764B (en) 1968-10-17
ES356249A1 (en) 1970-04-01
CH507163A (en) 1971-05-15
AT284028B (en) 1970-08-25
FR1579720A (en) 1969-08-29

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