WO2004058651A3 - Fermentable effluent- and/or sludge-purification method and installation for implementing one such method - Google Patents

Fermentable effluent- and/or sludge-purification method and installation for implementing one such method Download PDF

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Publication number
WO2004058651A3
WO2004058651A3 PCT/FR2003/003898 FR0303898W WO2004058651A3 WO 2004058651 A3 WO2004058651 A3 WO 2004058651A3 FR 0303898 W FR0303898 W FR 0303898W WO 2004058651 A3 WO2004058651 A3 WO 2004058651A3
Authority
WO
WIPO (PCT)
Prior art keywords
effluent
sludge
filtrate
step consisting
fermentable
Prior art date
Application number
PCT/FR2003/003898
Other languages
French (fr)
Other versions
WO2004058651A2 (en
Inventor
Bernard Sautjeau
Original Assignee
Otv Sa
Bernard Sautjeau
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 Otv Sa, Bernard Sautjeau filed Critical Otv Sa
Priority to AU2003303465A priority Critical patent/AU2003303465A1/en
Publication of WO2004058651A2 publication Critical patent/WO2004058651A2/en
Publication of WO2004058651A3 publication Critical patent/WO2004058651A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/008—Mobile apparatus and plants, e.g. mounted on a vehicle

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention relates to a method of treating fermentable effluent and/or sludge contained in at least one tank, comprising at least 15 grams of dry matter per litre. The invention is characterised in that it comprises: a step consisting in removing all of the effluent and/or sludge from the tank; a step consisting in subjecting the effluent and/or sludge to an acidification process, such that the pH thereof is between 2.5 and 3.5; a step consisting in adding at least one nitrite salt to the effluent and/or sludge at a concentration of approximately 0.5 and 1 g of nitrogen per kilogram of dry matter contained in the effluent or sludge; a step consisting in maintaining the mixture thus formed in contact for a period of between 5 minutes and 12 hours, with permanent or intermittent stirring; a step in which the mixture is filtered through a filter press in order to produce a filtrate and dehydrated sludge; a step involving the intermediate storage of said filtrate; a step comprising the neutralisation (approximately pH 7) of the filtrate immediately before a final step whereby the neutralised filtrate is released towards one or more tanks which originally housed the effluent and/or sludge before treatment, such as to prevent any effluent from being discharged into the natural environment at the treatment site.
PCT/FR2003/003898 2002-12-23 2003-12-23 Fermentable effluent- and/or sludge-purification method and installation for implementing one such method WO2004058651A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003303465A AU2003303465A1 (en) 2002-12-23 2003-12-23 Fermentable effluent- and/or sludge-purification method and installation for implementing one such method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR02/16587 2002-12-23
FR0216587A FR2849020B1 (en) 2002-12-23 2002-12-23 METHOD OF PURIFYING SLUDGE AND / OR FERMENTESCIBLE EFFLUENTS AND INSTALLATION FOR CARRYING OUT SUCH A METHOD

Publications (2)

Publication Number Publication Date
WO2004058651A2 WO2004058651A2 (en) 2004-07-15
WO2004058651A3 true WO2004058651A3 (en) 2004-08-19

Family

ID=32406459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/003898 WO2004058651A2 (en) 2002-12-23 2003-12-23 Fermentable effluent- and/or sludge-purification method and installation for implementing one such method

Country Status (3)

Country Link
AU (1) AU2003303465A1 (en)
FR (1) FR2849020B1 (en)
WO (1) WO2004058651A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5876613A (en) * 1995-03-31 1999-03-02 Omnium De Traitements Et De Valorisation Sludge digestion method
JP2002028696A (en) * 2000-07-17 2002-01-29 Kurita Water Ind Ltd Method for treating sludge
JP2002361300A (en) * 2001-06-11 2002-12-17 Kurita Water Ind Ltd Sludge treating method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5876613A (en) * 1995-03-31 1999-03-02 Omnium De Traitements Et De Valorisation Sludge digestion method
JP2002028696A (en) * 2000-07-17 2002-01-29 Kurita Water Ind Ltd Method for treating sludge
JP2002361300A (en) * 2001-06-11 2002-12-17 Kurita Water Ind Ltd Sludge treating method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05 3 May 2002 (2002-05-03) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 04 2 April 2003 (2003-04-02) *

Also Published As

Publication number Publication date
FR2849020B1 (en) 2005-07-01
WO2004058651A2 (en) 2004-07-15
AU2003303465A1 (en) 2004-07-22
FR2849020A1 (en) 2004-06-25

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