WO1997008105A1 - Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees - Google Patents
Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees Download PDFInfo
- Publication number
- WO1997008105A1 WO1997008105A1 PCT/FR1996/001303 FR9601303W WO9708105A1 WO 1997008105 A1 WO1997008105 A1 WO 1997008105A1 FR 9601303 W FR9601303 W FR 9601303W WO 9708105 A1 WO9708105 A1 WO 9708105A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- biological
- remineralization
- treated
- elimination
- Prior art date
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
- C02F3/30—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/903—Nitrogenous
Definitions
- the present invention relates to a method for simultaneously ensuring the elimination of nitrogenous compounds, in particular nitrates, and the biological remineralization of weakly mineralized waters before the coagulation, flocculation and clarification treatments.
- the physicochemical processes do not eliminate the nitrates, they only displace them: they are found in the eluates of regeneration which also contain high concentrations of chlorides, or other salts of regeneration; in addition, these processes are sensitive to the presence of organic matter in the water to be treated.
- Biological processes are well suited for the elimination of nitrogen compounds, however, they do not make it possible to eliminate colloidal substances. Furthermore, these processes are dependent on the temperature of the water to be treated and up to now, they have only been used industrially for the treatment of well water having a constant temperature above 10 °. vs.
- the present invention proposes to carry out under particularly economical conditions an elimination of nitrogenous compounds and an at least partial remineralization of weakly mineralized surface waters before carrying out the conventional coagulation, flocculation and clarification.
- the subject of the present invention is therefore a process for the elimination of nitrogenous compounds, in particular nitrates, and for remineralization of weakly mineralized waters, characterized in that, by biological treatment, the elimination of nitrogen compounds and at least partial remineralization of the raw water, the denitrified and remineralized water then being subjected to coagulation, flocculation and clarification treatments.
- the water to be treated, weakly mineralized is brought into contact with a heterotrophic bacterial flora for the elimination of nitrogen compounds, the heterotrophic denitrification biological reaction releasing carbon dioxide which is used directly and immediately to ensure biological remineralization, at least partially, of the water before carrying out the clarification.
- the weakly mineralized raw water to be subjected to the simultaneous biological treatments of elimination of nitrogenous components and remineralization is added with the reagents necessary for the growth and activity of bacteria, that is to say a source of carbon assimilable by heterotrophic bacteria in particular ethanol, acetic acid and phosphorous reagents such as especially phosphoric acid.
- the raw water is then introduced into a single reactor where the elimination of nitrogenous compounds, in particular nitrates and remineralization, at least partial of the raw water, is carried out simultaneously, biologically.
- the water to be treated, weakly mineralized is brought into contact with a heterotrophic bacterial flora ensuring the elimination of nitrogenous compounds and the heterotrophic denitrification biological reaction releases carbon dioxide directly usable to participate in the reaction of remineralization, before the coagulation-flocculation step.
- the elimination of nitrogenous compounds by heterotrophic biological pathway is accompanied by a biological remineralization of the weakly mineralized raw water, in the same reaction zone.
- the contact time in the biological zone is that necessary for the metaboiisation reaction of the nitrogen compounds and for biological remineralization.
- This contact time is also a function of the temperature of the medium. By way of example, it can be indicated that at 12 ° C., this contact time is approximately 7 minutes for an elimination of NO 3 " of 50 mg / liter.
- the heterotrophic denitrifying bacteria, associated with the suspended solids of the raw water form a flock which has the property of being very little clogging in a culture reactor fixed on a material. support of determined particle size and being able to be fluidized in a reactor in free culture.
- the water to be treated is introduced at the base of the single biological reactor and the biological contact zone can be either filled with a granular material allowing the attachment of bacteria to its surface, or empty allowing, from a floc-generating support to constitute a mud bed composed of dense flocs, fluidized by the upward flow of water during treatment.
- the introduction of the water to be treated at the base of the reactor allows the evacuation of all or part of the flocs generated by the biological reaction in the presence of suspended solids and colloids from the water. treat.
- the special character of the floc formed in the biological reactor gives the sludge a cohesion coefficient greater than that obtained with raw water alone, which then makes it possible to achieve better separation, either in decantation or in flotation.
- the coagulation-flocculation step takes place in a more buffered medium since the bicarbonate ions formed during biological denit ⁇ faction ensure the remineralization of the raw water.
- this medium is more stable in terms of pH and the control of the optimal coagulation conditions is easier, which makes it possible, for example, to reduce the residual concentration of Al 3+ ions.
- the water treated in the biological reactor is added with the reagents necessary for the coagulation-flocculation. It receives a coagulant, generally ferric chloride, aluminum sulphate or any other derivative, an acid or alkaline reagent making it possible to obtain the optimal coagulation pH, generally CO2, sulfuric acid, soda or whitewash. It is also possible to use a flocculation aid, for example an anionic polymer of synthesis or of organic origin.
- a coagulant generally ferric chloride, aluminum sulphate or any other derivative
- an acid or alkaline reagent making it possible to obtain the optimal coagulation pH, generally CO2, sulfuric acid, soda or whitewash.
- a flocculation aid for example an anionic polymer of synthesis or of organic origin.
- the water thus denitrified, remineralized, coagulated and flocculated is then clarified by a conventional process, for example by decantation or flotation.
- the process according to the present invention can very easily be integrated into an already existing clarification process comprising, as a clarification reactor, a float or a decanter with a mud bed.
- the method according to the present invention allows significant savings in remineralization reagents.
- the economy achieved by the invention compared to the quantities of CO2 injected in the implementation of conventional remineralization processes of water, is 250 tonnes per year, which represents under current economic conditions, a saving of 450,000 to 500,000 francs per year.
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE0863849T DE863849T1 (de) | 1995-08-29 | 1996-08-21 | Verfahren zur entfernung von stickstoffverbindungen und zur remineralisation von schwachmineralisierten abwässern |
JP9509908A JPH11512017A (ja) | 1995-08-29 | 1996-08-21 | 鉱物質含有量の少ない水からの窒素化合物の除去方法及び水の再鉱化方法 |
EP96929355A EP0863849A1 (fr) | 1995-08-29 | 1996-08-21 | Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees |
AU68786/96A AU698344B2 (en) | 1995-08-29 | 1996-08-21 | Method for removing nitrogen compounds and for remineralizing weakly mineralized water |
BR9610038A BR9610038A (pt) | 1995-08-29 | 1996-08-21 | Processo de eliminação de compostos nitrogenados e de remineralização de águas pouco mineralizadas |
US09/029,035 US6093321A (en) | 1995-08-29 | 1996-08-21 | Process for removing nitrogenous compounds and remineralizing water |
MXPA/A/1998/001545A MXPA98001545A (en) | 1995-08-29 | 1998-02-26 | Procedure for the elimination of nitrogenated compounds and for the remineralization of weak water mineraliz |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9510179A FR2738234B1 (fr) | 1995-08-29 | 1995-08-29 | Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees |
FR95/10179 | 1995-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997008105A1 true WO1997008105A1 (fr) | 1997-03-06 |
Family
ID=9482142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001303 WO1997008105A1 (fr) | 1995-08-29 | 1996-08-21 | Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees |
Country Status (11)
Country | Link |
---|---|
US (1) | US6093321A (fr) |
EP (1) | EP0863849A1 (fr) |
JP (1) | JPH11512017A (fr) |
CN (1) | CN1193950A (fr) |
AU (1) | AU698344B2 (fr) |
BR (1) | BR9610038A (fr) |
CA (1) | CA2227965A1 (fr) |
DE (1) | DE863849T1 (fr) |
ES (1) | ES2127165T1 (fr) |
FR (1) | FR2738234B1 (fr) |
WO (1) | WO1997008105A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6365048B1 (en) * | 2000-07-19 | 2002-04-02 | Board Of Trustees Of Michigan State University | Method for treatment of organic matter contaminated drinking water |
FR2823499B1 (fr) * | 2001-04-12 | 2004-02-27 | Vivendi Water Systems | Procede de remineralisation d'une eau brute |
US7771599B1 (en) * | 2009-03-09 | 2010-08-10 | Doosan Hydro Technology, Inc. | System and method for using carbon dioxide sequestered from seawater in the remineralization of process water |
FR2983355B1 (fr) * | 2011-11-25 | 2014-02-14 | Prodose | Procede et dispositifs de remineralisation et de correction de ph d'une eau produite dans un aeronef |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0142123A2 (fr) * | 1983-11-09 | 1985-05-22 | Linde Aktiengesellschaft | Procédé et dispositif pour la dénitrification biologique de l'eau |
JPS62152593A (ja) * | 1985-12-25 | 1987-07-07 | Naigai Kagaku Seihin Kk | 有機質廃水の処理方法 |
JPS62152597A (ja) * | 1985-12-25 | 1987-07-07 | Naigai Kagaku Seihin Kk | 廃水処理方法 |
EP0261516A2 (fr) * | 1986-09-26 | 1988-03-30 | Gelsenwasser AG | Procédé de dénitrification microbiologique continue des eaux souterraines |
EP0634369A1 (fr) * | 1993-07-12 | 1995-01-18 | Omnium De Traitements Et De Valorisation (Otv) | Procédé et installation d'épuration d'eau à boues physico-chimiques dénitrifiantes |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537682A (en) * | 1982-01-29 | 1985-08-27 | Environmental Research & Technology | Activated sludge wastewater treating process |
US5022993A (en) * | 1988-06-02 | 1991-06-11 | Orange Water And Sewer Authority | Process for treating wastewater |
SE468985B (sv) * | 1990-09-07 | 1993-04-26 | Johnson Axel Eng Ab | Foerfarande foer rening av avloppsvatten |
US5211847A (en) * | 1991-04-22 | 1993-05-18 | Infilco Degremont Inc. | Denitrification methods |
US5705072A (en) * | 1997-02-03 | 1998-01-06 | Haase; Richard Alan | Biotreatment of wastewater from hydrocarbon processing units |
-
1995
- 1995-08-29 FR FR9510179A patent/FR2738234B1/fr not_active Expired - Fee Related
-
1996
- 1996-08-21 DE DE0863849T patent/DE863849T1/de active Pending
- 1996-08-21 WO PCT/FR1996/001303 patent/WO1997008105A1/fr not_active Application Discontinuation
- 1996-08-21 US US09/029,035 patent/US6093321A/en not_active Expired - Fee Related
- 1996-08-21 BR BR9610038A patent/BR9610038A/pt not_active Application Discontinuation
- 1996-08-21 EP EP96929355A patent/EP0863849A1/fr not_active Withdrawn
- 1996-08-21 ES ES96929355T patent/ES2127165T1/es active Pending
- 1996-08-21 CA CA002227965A patent/CA2227965A1/fr not_active Abandoned
- 1996-08-21 JP JP9509908A patent/JPH11512017A/ja active Pending
- 1996-08-21 AU AU68786/96A patent/AU698344B2/en not_active Ceased
- 1996-08-21 CN CN96196582A patent/CN1193950A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0142123A2 (fr) * | 1983-11-09 | 1985-05-22 | Linde Aktiengesellschaft | Procédé et dispositif pour la dénitrification biologique de l'eau |
JPS62152593A (ja) * | 1985-12-25 | 1987-07-07 | Naigai Kagaku Seihin Kk | 有機質廃水の処理方法 |
JPS62152597A (ja) * | 1985-12-25 | 1987-07-07 | Naigai Kagaku Seihin Kk | 廃水処理方法 |
EP0261516A2 (fr) * | 1986-09-26 | 1988-03-30 | Gelsenwasser AG | Procédé de dénitrification microbiologique continue des eaux souterraines |
EP0634369A1 (fr) * | 1993-07-12 | 1995-01-18 | Omnium De Traitements Et De Valorisation (Otv) | Procédé et installation d'épuration d'eau à boues physico-chimiques dénitrifiantes |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 381 (C - 464) 12 December 1987 (1987-12-12) * |
Also Published As
Publication number | Publication date |
---|---|
BR9610038A (pt) | 1999-07-06 |
US6093321A (en) | 2000-07-25 |
MX9801545A (es) | 1998-05-31 |
FR2738234A1 (fr) | 1997-03-07 |
ES2127165T1 (es) | 1999-04-16 |
AU6878696A (en) | 1997-03-19 |
AU698344B2 (en) | 1998-10-29 |
FR2738234B1 (fr) | 1998-10-30 |
CA2227965A1 (fr) | 1997-03-06 |
EP0863849A1 (fr) | 1998-09-16 |
DE863849T1 (de) | 1999-06-02 |
JPH11512017A (ja) | 1999-10-19 |
CN1193950A (zh) | 1998-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1203011C (zh) | 含氨废水的处理方法 | |
US5137636A (en) | Process for the biological purification of waste water | |
EP0309352B1 (fr) | Procédé et appareillage pour l'augmentation de la concentration des boues dans les stations d'épuration des eaux | |
US4787978A (en) | Method for the purification of waste water, notably of urban waste water | |
JP4649911B2 (ja) | 有機物及び窒素含有排水の処理方法 | |
JP4426105B2 (ja) | 特定成分、例えばアンモニア、を含有する廃水の処理プロセス | |
EP0504019B1 (fr) | Procédé d'épuration biologique des eaux par nitrification et dénitrification | |
EP1531123A3 (fr) | Méthode et installation pour traiter des eaux de déchet de bateaux | |
JP4570550B2 (ja) | 高濃度有機性廃水の窒素除去方法及び装置 | |
WO1997008105A1 (fr) | Procede d'elimination des composes azotes et de remineralisation d'eaux faiblement mineralisees | |
JP2928569B2 (ja) | 水の精製方法 | |
KR100336483B1 (ko) | 황 이용 탈질에 의하여 폐수 중의 질소를 제거하는 방법 | |
ATE267774T1 (de) | Abwasserreinigungsverfahren | |
JPH08309366A (ja) | 廃水からの窒素及びリンの除去法 | |
KR100470350B1 (ko) | 축산폐수의 처리방법 | |
JPH0698359B2 (ja) | 有機性汚水の処理方法 | |
CN110627314A (zh) | 一种多法联用高效去除印染废水总氮的方法 | |
EP0634370A1 (fr) | Procédé de traitement d'effluents azotés avec des boues comme substrat | |
JPH10180298A (ja) | 排水処理方法及び排水処理装置 | |
JPS6133639B2 (fr) | ||
JPH01215400A (ja) | 廃水の生物学的脱窒素、脱リン方法 | |
FR2725193A1 (fr) | Procede de traitement biologique d'un effluent incluant une etape de post-denitrification et installation pour la mise en oeuvre de ce procede | |
KR930004192B1 (ko) | 폐수 처리시에 반응조를 이용한 폐수 처리방법 | |
FR2714045A1 (fr) | Procédé d'épuration d'eaux usées avec dénitrification et installations pour sa mise en Óoeuvre. | |
SU1323539A1 (ru) | Способ биохимической очистки сточных вод |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 96196582.7 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1996929355 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 1997 509908 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2227965 Country of ref document: CA Ref document number: 2227965 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/1998/001545 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09029035 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1996929355 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996929355 Country of ref document: EP |