EP1542931A1 - Method and device for reducing production of wastewater treatment station sludge with fixed biological cultures - Google Patents
Method and device for reducing production of wastewater treatment station sludge with fixed biological culturesInfo
- Publication number
- EP1542931A1 EP1542931A1 EP03772377A EP03772377A EP1542931A1 EP 1542931 A1 EP1542931 A1 EP 1542931A1 EP 03772377 A EP03772377 A EP 03772377A EP 03772377 A EP03772377 A EP 03772377A EP 1542931 A1 EP1542931 A1 EP 1542931A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sludge
- production
- rpb
- reduction
- biological treatment
- 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.)
- Withdrawn
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
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
-
- 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
- C02F3/06—Aerobic processes using submerged filters
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
Definitions
- the present invention relates to a method and a device ensuring the reduction of the production of sludge from wastewater treatment plants, urban or industrial, by fixed biological cultures.
- RPB sludge
- FIG. 1 of the accompanying drawings there is shown schematically a known installation of this type, comprising, in a loop on an aeration tank, a device for reducing the production of sludge can be an aerobic thermophilic reactor or a partial ozone oxidation unit producing mechanical agitation.
- the reference 1 designates the introduction of the waste water to be treated, the latter passing respectively through an anaerobic zone R, an anoxic zone X, an aerobic zone A, before being treated in a clarifier C.
- the RPB reactor designated as a whole by the reference B, is mounted in parallel and in a loop on the activated sludge treatment installation (C / N / P treatment).
- volume of the station 15,000 m 3
- a fraction of the sludge present in the aeration tank is directed continuously and after any thickening to the device for reducing the production of sludge.
- the quantity of sludge sent daily to the RPB process is equivalent to 1 to 10 times the quantity of sludge produced by the water treatment installation under operating conditions conventional.
- the outlet effluent from the RPB loop is made up of both solubilized compounds in the RPB device and suspended solids. In the example illustrated in FIG. 1, the installation ensures the production of sludge in excess of 600 kg MES / d (ie 80% GWP).
- the present invention takes the opposite of the prior art recalled above, by dissociating the step to reduce sludge production, from step purification, by providing a step of biological treatment of the activated sludge type at low, medium or high load, associated with a step of RPB by thermophilic enzymatic way or by partial oxidation with ozone coupled with a mechanical agitation.
- the source of substrate for bacteria in biological treatment is no longer the organic matter of the wastewater, but the organic matter coming from the lysis of the bacterial cells induced during the RPB stage.
- the present invention also relates to a device for implementing the process specified above, which is in the form of an installation dedicated to the reduction of sludge production associating a device for reducing sludge production (RPB) and a low, medium or high charge biological treatment reactor, the source of substrate for the biological treatment bacteria consists of the organic material originating from the lysis of the bacterial cells induced in the RPB reactor.
- RPB reducing sludge production
- FIG. 2 schematically illustrates an installation implementing the method of the invention.
- this installation takes the form of a platform dedicated to the reduction of sludge production which is associated with an installation for treating waste water by a fixed biomass reactor ( biofilter, for example), designated as a whole by the reference 2.
- This dedicated platform consists of a RPB device, designated as a whole by the reference 3, coupled to a biological treatment, carried out in a reactor designated by the reference 8 and comprising a separation device - thickening 9.
- the organic material originating from the lysis of the bacterial cells induced during the RPB stage constitutes the source of substrate for the biological treatment in the reactor 8.
- the present invention has the advantage of allowing objective measurement of the reduced quantity of sludge.
- the reduction in sludge production is calculated by the difference between the quantity of sludge extracted from the water treatment line (in 6) and the quantity of residual sludge, extracted (in 7) from the dedicated RPB process.
- thermophilic enzymatic reactor 650 m
- Such a device makes it possible to respond to the drawbacks of applying, to biological treatment stations with fixed biomass, RPB methods directly integrated in a loop. It also provides the following advantages: - possibility of adjusting the sludge reduction according to needs (20 to 100% o reduction);
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)
- Treatment Of Sludge (AREA)
- Activated Sludge Processes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0211860A FR2844786B1 (en) | 2002-09-25 | 2002-09-25 | METHOD AND DEVICE FOR REDUCING SLUDGE PRODUCTION OF WASTEWATER TREATMENT STATIONS BY FIXED BIOLOGICAL CROPS |
FR0211860 | 2002-09-25 | ||
FR0215384 | 2002-12-05 | ||
FR0215384A FR2844785B1 (en) | 2002-09-25 | 2002-12-05 | METHOD AND DEVICE FOR REDUCING SLUDGE PRODUCTION OF WASTEWATER TREATMENT STATIONS BY FIXED BIOLOGICAL CROPS |
PCT/FR2003/002806 WO2004028979A1 (en) | 2002-09-25 | 2003-09-24 | Method and device for reducing production of wastewater treatment station sludge with fixed biological cultures |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1542931A1 true EP1542931A1 (en) | 2005-06-22 |
Family
ID=31979943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03772377A Withdrawn EP1542931A1 (en) | 2002-09-25 | 2003-09-24 | Method and device for reducing production of wastewater treatment station sludge with fixed biological cultures |
Country Status (8)
Country | Link |
---|---|
US (1) | US7357870B2 (en) |
EP (1) | EP1542931A1 (en) |
AU (1) | AU2003279431A1 (en) |
DE (1) | DE03772377T1 (en) |
ES (1) | ES2239932T1 (en) |
FR (1) | FR2844785B1 (en) |
TR (1) | TR200502227T3 (en) |
WO (1) | WO2004028979A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008519674A (en) * | 2004-11-11 | 2008-06-12 | 株式会社荏原製作所 | Method and apparatus for treating organic wastewater to reduce excess sludge generation |
WO2008024445A2 (en) * | 2006-08-23 | 2008-02-28 | Siemens Water Technologies Corp. | Sequencing batch reactor with continuous membrane filtration and solids reduction |
US9145315B2 (en) | 2013-03-01 | 2015-09-29 | Paradigm Environmental Technologies Inc. | Wastewater treatment process and system |
CN106745796B (en) * | 2015-07-31 | 2019-12-17 | 盐池县荣桂昌食品科技有限公司 | Preparation of biological purification carrier for wastewater purification treatment |
CN110510753A (en) * | 2019-08-20 | 2019-11-29 | 深圳市科世纪环保科技有限公司 | A kind of technique that organic enzymes are used for mud decrement |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3718582A (en) * | 1971-03-23 | 1973-02-27 | E Smith | Microbial biolysis process |
US3718528A (en) * | 1971-08-09 | 1973-02-27 | A Bergstrom | Heat reflecting laminate |
JPS558835A (en) * | 1978-07-04 | 1980-01-22 | Shinryo Air Conditioning Co Ltd | Treatment of surplus sludge |
DE59001181D1 (en) | 1989-02-21 | 1993-05-19 | Fuchs Leonhard | METHOD FOR THE DETERMINATION AND AEROBIC STABILIZATION OF CLEANING SLUDGE. |
US5013429A (en) * | 1989-03-08 | 1991-05-07 | Lenox Institute For Research, Inc. | Apparatus for stabilizing sludge |
US5141646A (en) * | 1991-03-12 | 1992-08-25 | Environmental Resources Management, Inc. | Process for sludge and/or organic waste reduction |
JPH1052697A (en) * | 1996-08-09 | 1998-02-24 | Ebara Corp | Method for reduction of organic sludge |
JP3449868B2 (en) * | 1996-08-22 | 2003-09-22 | 株式会社荏原製作所 | How to reduce organic sludge |
JP3326080B2 (en) * | 1996-11-11 | 2002-09-17 | 株式会社荏原製作所 | How to reduce organic sludge |
US6224769B1 (en) * | 1997-06-05 | 2001-05-01 | Shinko Pantec Co., Ltd. | Method and apparatus for treating organic waste water |
FR2766813B1 (en) * | 1997-08-01 | 1999-10-01 | Degremont | PROCESS AND DEVICE FOR WASTEWATER TREATMENT INCLUDING ADDITIONAL TREATMENT OF SLUDGE BY OZONATION |
FR2781785B1 (en) * | 1998-02-16 | 2000-09-29 | Omnium Traitement Valorisa | METHOD FOR THE BIOLOGICAL TREATMENT OF NON-OR LITTLE OR EXCESSIVE SLUDGE EFFLUENTS INCLUDING A FIXED BIOMASS TREATMENT STAGE |
EP1254865A1 (en) | 2001-04-27 | 2002-11-06 | VA TECH WABAG GmbH | Disintegration of Anaerobically digested sewage sludge |
-
2002
- 2002-12-05 FR FR0215384A patent/FR2844785B1/en not_active Expired - Fee Related
-
2003
- 2003-09-24 AU AU2003279431A patent/AU2003279431A1/en not_active Abandoned
- 2003-09-24 WO PCT/FR2003/002806 patent/WO2004028979A1/en not_active Application Discontinuation
- 2003-09-24 US US10/528,692 patent/US7357870B2/en not_active Expired - Fee Related
- 2003-09-24 EP EP03772377A patent/EP1542931A1/en not_active Withdrawn
- 2003-09-24 DE DE2003772377 patent/DE03772377T1/en active Pending
- 2003-09-24 TR TR200502227T patent/TR200502227T3/en unknown
- 2003-09-24 ES ES03772377T patent/ES2239932T1/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2004028979A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003279431A1 (en) | 2004-04-19 |
WO2004028979A1 (en) | 2004-04-08 |
ES2239932T1 (en) | 2005-10-16 |
US20060000770A1 (en) | 2006-01-05 |
FR2844785B1 (en) | 2005-07-08 |
DE03772377T1 (en) | 2005-09-29 |
FR2844785A1 (en) | 2004-03-26 |
US7357870B2 (en) | 2008-04-15 |
TR200502227T3 (en) | 2005-08-22 |
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