WO2005014493A1 - Reacteur de denitrification a culture fixee - Google Patents
Reacteur de denitrification a culture fixee Download PDFInfo
- Publication number
- WO2005014493A1 WO2005014493A1 PCT/FR2004/002011 FR2004002011W WO2005014493A1 WO 2005014493 A1 WO2005014493 A1 WO 2005014493A1 FR 2004002011 W FR2004002011 W FR 2004002011W WO 2005014493 A1 WO2005014493 A1 WO 2005014493A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- effluent
- denitrification
- reactor
- nitrification
- elimination
- 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.)
- Ceased
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
- C02F3/06—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
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- 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
-
- 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 fixed culture denitrification reactor associated with a structure for nitrification and elimination of carbon pollution.
- the nitrification stage requires: a high sludge age, since the autotrophic biomass has a slow growth rate; a pH between 6 and 8 with an optimal value of the order of 7 since the growth rate of nitrifying bacteria decreases outside of these pH values and, a dissolved oxygen content maintained between 2 and 4 mg / 1 .
- the denitrification stage requires compliance with the following constraints: a low mud age since the heterotrophic biomass exhibits rapid growth; a pH between 6 and 8 with an optimal value of the order of 7; very low dissolved oxygen content (anoxic conditions) since the presence of oxygen inhibits denitrification and a BOD s sufficient to meet the needs for organic carbon.
- the denitrification process can be implemented in three different ways: - in an anoxic zone in free culture.
- the anoxia tank is located at the head of the treatment system and is responsible for denitrification.
- the supply of N0 3 " is ensured by the recirculation of the mixed liquor from the aeration tank and the organic carbon requirements are met by the arrival of pretreated water.
- the denitrifying biomass is recirculated from the clarifier to the tank.
- the aeration tank ensures nitrification and the additional elimination of carbon pollution.
- the disadvantage of - this configuration results in the fact that it requires recirculation of the order of 150 to 400% of the flow rate.
- the volume of the anoxic basin represents 25% of the total volume necessary for purification; - in the aeration tank by syncopating the aeration,. the temporal alternation allowing nitrification-denitrification in a single basin.
- a sludge age greater than 10 days a 30% increase in ventilation compared to the requirements for eliminating carbon pollution alone; a minimum anoxia time of the order of 8 to 10 h / d and a sludge rate of approximately 4 g MVS / 1; - in a structure with fixed biomass (biofilter) which, in the same way as an anoxic zone can make it possible to ensure denitrification on condition of injecting air in order to guarantee a stall, homogeneous and controlled, of the biomass in excess.
- the present invention proposes to provide a denitrification reactor which in particular solves the following technical problems which are not resolved by this state of the art: - elimination of the need to ensure self- cleaning up excess biomass by injecting air and therefore providing ventilation systems; - reduction of the volume of the work dedicated to denitrification and - control of the contact time necessary for denitrification.
- the subject of this invention is a culture denitrification reactor fixed on a support of the type organized plastic, associated with a work of nitrification and elimination of carbonaceous pollution, said reactor being supplied by a mixture of the raw effluent to be treated and the effluent coming from the work of nitrification and elimination of carbon pollution, characterized in that it comprises: -two denitrification compartments provided with a packing of the organized plastic type, - these compartments, arranged in parallel, operating by successive loads or covers, that is to say alternately one being in the filling phase (denitrification and self-cleaning of excess biomass, i.e.
- a drain compartment receiving the denitrified effluent in one or the other of said denitrification compartments; - a system for supplying the effluent mixture consisting of a rotary arm supplying, on the surface, alternately each of said compartments and; - means ensuring the recirculation of the denitrified effluent from the emptying compartment to the structure dedicated to nitrification and the elimination of carbon pollution.
- the work dedicated to nitrification and the elimination of carbon pollution can be a bacterial bed or a trickling bed; an aerobic biological filtration system in ascending air and water flow of the "Biofor ® " type or discs biological on which the biomass is fixed, these discs rotating around a horizontal axis and partly bathing in the effluent to be treated.
- the denitrification reactor described above can be integrated into an installation as described in FR-B- 2 782 508, the denitrified effluent in said reactor being recirculated in the bacterial bed of this installation. Thanks to this arrangement, the finishing of the treatment and in particular the elimination of suspended matter is carried out in the filters planted with reeds described in this French patent.
- Figure 1 is a sectional view along II of Figure 4;
- Figure 2 is a top view of Figure 1;
- Figure 3 is a plan view of Figure 1;
- Figure 4 is a sectional view along IV-IV of Figure 3
- Figure 5 is a plan view of an example of a plastic lining serving to support the fixed biomass ensuring denitrification
- Figure 6 shows a curve illustrating the economic benefits' provided by the present invention.
- the denitrification reactor object of the present invention designated as a whole by the reference 1 is associated with a structure in which the nitrification of the effluent is carried out as well as the elimination of the carbon pollution, this work having been shown diagrammatically in the drawing and designated by the reference 2.
- It may in particular be a bacterial bed or trickling bed, an aerobic biological filtration system in air flow and ascending water of the "Biofor ® " type or biological discs on which the biomass is fixed, these discs rotating around a horizontal axis and partly bathing in the effluent to be treated.
- the denitrification reactor comprises on the one hand, two compartments 3 and 4, in parallel, dedicated to denitrification and separated by a partition 5 and on the other hand a so-called drain compartment 6 completely isolated from compartments 3 and 4 by a partition longitudinal 7.
- the denitrification compartments 3 and 4 are of the culture type fixed on a plastic-type support organized schematically in FIGS. 1, 3 and 4 by the lining 8.
- This lining can be of the type illustrated in FIG. 5 having a specific surface included between 50 and 200 m 2 / m 3 ' and preferably 150 m 2 / m 3 , for example sold under the brand name "Cloisonyl" by the French company ATOCHEM and distributed by CECA or other equivalent products, in particular "Biodec ® ”manufactured by Munters Euroform GmbH and distributed by Socrematic SA ..
- the denitrification reactor 1 operates alternately by charges or successive tarpaulins on the two compartments 3 and 4 arranged in parallel as follows: - filling phase of a reactor: denitrification and self-cleaning; - reactor drain phase: denitrification and drainage of excess biomass.
- the reactor 1 is supplied with a mixture of the raw effluent supplied by a line 9 and coming for example from a screen 10, this raw effluent being heavily loaded with organic matter and effluent from the nitrification structure 2.
- This alternating supply to the surface of the compartments 3 and 4 is carried out using a rotary arm 11 and a distributor 22 from a distribution means 12 receiving the mixture.
- the structure 2 dedicated to nitrification and the elimination of carbon pollution comprises a floor 13 with means for taking up the nitrified effluent which is mixed on a deflector 14 with the raw effluent coming from line 9, before supplying the distribution means 12.
- One of the walls (15 in Figure 1) defining the denitrification compartments 3 and 4 is designed to leave a free passage 16 • above the floor of the reactor 1 for the circulation of the treated effluent in the one or the other of compartments 3 and 4.
- Drain pumps 17 ensure the recovery of this effluent, respectively from compartments 3 and 4, and its evacuation by a pipe 18 into the drain compartment 6.
- Most of the treated effluent admitted into the drainage compartment 6 is recirculated to the structure 2 by means of pumps such as 21 supplying a discharge pipe shown schematically in 19.
- the effluent treated after elimination of nitrogen and carbonaceous pollution is discharged by an overflow 20.
- one of the original features of the denitrification reactor which is the subject of the invention is the presence of two denitrification compartments arranged in parallel and operating alternately.
- the dimensioning of the volumes of the denitrification reactor 1 takes account of the hourly peak flow, as well as the maximum flow admissible by the station. Without departing from the scope of the invention, provide a buffer tank to smooth flows and loads.
- Controlled immersion residence time The fact of operating by alternating charges in compartments 3 and 4 makes it possible to apply and control the contact time necessary for denitrification.
- the reactor may for example be dimensioned so as to ensure an average contact time of the effluent of the order of 30 minutes.
- the invention makes it possible to considerably reduce the volume of the structure (compartments 3 and 4) dedicated to the denitrification process. Indeed, the volume of compartments 3 and 4 represents only 10% of the total volume necessary for the treatment whereas the volume of anoxia in activated sludge generally corresponds to 25% of this total volume.
- the reactor which is the subject of the present invention can be applied in particular to waste water treatment stations whose level of elimination of total nitrogen is NGL ⁇ 15 mg / 1 (regulations in force for stations treating less than 100 000 population equivalents).
- FIG. 6 illustrates the price differences as a function of the processing capacity, between a conventional installation (right A) and an installation according to the invention (right B).
- the invention can also be applied to the rehabilitation of a station with a view to a requested level of treatment, which is more restrictive (elimination of total nitrogen) than during the construction of the purification station.
- the invention is of particular interest in the case of the rehabilitation or construction of stations with a treatment capacity of less than 5,000 population equivalents, for which removal of total nitrogen is required.
- processes generally described as rustic, that is to say having low operating costs (labor, electrical consumption, minimization of the number of electromechanical equipment etc.).
- the invention can be applied to installations of the type described in FR-B-2 782 508 which describes a method and an installation for treating domestic waste water associating a bacterial bed followed by filtration-composting cells or beds planted with reeds (designated by the term "Rhizofilter").
- the first stage constituted by the bacterial bed ensures the treatment of dissolved and colloidal carbonaceous matter (COD, BOD 5 and NH 4 ) and the second stage constituted by the beds of filtration-composting refines and completes the treatment of dissolved matter, while filtering out the particulate matter present (matter in inlet suspension + leached biomass from the bacterial bed or biological discs).
- the sludge is thus stored under aerobic conditions for 5 to 8 years. As a result, they undergo aerobic digestion which results in a mineralization rate greater than 40% and therefore a reduction of approximately 30% in the mass of sludge produced initially.
- the effluent treated by the denitrification reactor described above is pumped and feeds, by tarpaulins, the bacteria bed recirculation station.
- the filtration-composting beds, planted with reeds, on which the finishing treatment is carried out, are fed from an overflow which is located in the recirculation station.
- the sizing of the volumes of works must take into account the hourly peak flow as well as the maximum flow admissible by the station.
- a buffer tank can be provided in order to smooth the flow rates and the loads.
- This particular configuration of the invention induces only 10% of additional cost compared to the price of an installation according to FR-B-2 782 508 designed simply to remove carbon and ammoniacal nitrogen (nitrification).
- the implementation of the invention, in this particular application is extremely simple, even in the case of rehabilitation or extension of works in particular with a view to increasing their processing capacity.
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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04767793A EP1654199A1 (fr) | 2003-08-01 | 2004-07-27 | Reacteur de denitrification a culture fixee |
| US10/566,278 US7390400B2 (en) | 2003-08-01 | 2004-07-27 | Denitrification reactor with a fixed culture |
| AU2004263334A AU2004263334A1 (en) | 2003-08-01 | 2004-07-27 | Denitrification reactor with a fixed culture |
| BRPI0413181 BRPI0413181A (pt) | 2003-08-01 | 2004-07-27 | reator de desnitrificação com cultura fixada |
| DE2004767793 DE04767793T1 (de) | 2003-08-01 | 2004-07-27 | Entstickungsreaktor mit fixierter kultur |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0309558A FR2858316B1 (fr) | 2003-08-01 | 2003-08-01 | Reacteur de denitrification a culture fixee |
| FR03/09558 | 2003-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005014493A1 true WO2005014493A1 (fr) | 2005-02-17 |
Family
ID=34043753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2004/002011 Ceased WO2005014493A1 (fr) | 2003-08-01 | 2004-07-27 | Reacteur de denitrification a culture fixee |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7390400B2 (fr) |
| EP (1) | EP1654199A1 (fr) |
| CN (1) | CN100402443C (fr) |
| AU (1) | AU2004263334A1 (fr) |
| BR (1) | BRPI0413181A (fr) |
| DE (1) | DE04767793T1 (fr) |
| ES (1) | ES2258419T1 (fr) |
| FR (1) | FR2858316B1 (fr) |
| MA (1) | MA27916A1 (fr) |
| WO (1) | WO2005014493A1 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO327866B1 (no) * | 2006-03-09 | 2009-10-12 | Abb Research Ltd | En fremgangsmåte for styring og/eller overvåking |
| EP2049443B1 (fr) * | 2006-08-11 | 2016-01-06 | Aqwise - Wise Water Technologies Ltd | Procédé et appareil pour une clarification et une post-dénitrification endogène simultanées |
| US7972502B2 (en) * | 2007-07-04 | 2011-07-05 | Kabushiki Kaisha Toshiba | Aeration-less water treatment apparatus |
| US8753511B2 (en) | 2008-09-03 | 2014-06-17 | AQ-WISE—Wise Water Technologies Ltd. | Integrated biological wastewater treatment and clarification |
| US8758613B2 (en) * | 2009-10-16 | 2014-06-24 | Aqwise-Wise Water Technologies Ltd | Dynamic anaerobic aerobic (DANA) reactor |
| US8778184B2 (en) | 2010-10-15 | 2014-07-15 | Derek Byrd | Modular bioreactor system |
| CN105923770B (zh) * | 2016-06-15 | 2018-11-30 | 北京工业大学 | 短程硝化接厌氧氨氧化耦合短程反硝化进行污水脱氮的装置与方法 |
| CN114349144B (zh) * | 2021-11-25 | 2023-06-20 | 合肥供水集团有限公司 | 一种基于多级循环的含氯废水的处理装置 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0524794A1 (fr) * | 1991-07-26 | 1993-01-27 | Thames Water Utilities Limited | Procédé et dispositif pour le traitement de fluides |
| JPH06114388A (ja) * | 1992-10-01 | 1994-04-26 | Toshiba Corp | 生物ろ過方法 |
| US5795481A (en) * | 1995-02-02 | 1998-08-18 | Otv Omnium De Traitements Et De Valorisation S.A. | Process for the treatment of aqueous effluents on biofilters or other devices making use of fixed cultures |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3770623A (en) * | 1971-06-15 | 1973-11-06 | Max Planck Gesellschaft | System for purification of polluted water |
| US4251359A (en) * | 1979-05-21 | 1981-02-17 | C2 F Investment Company | On-site wastewater treatment system |
| US4892658A (en) * | 1988-03-17 | 1990-01-09 | Martin Joseph P | Wastewater treatment system |
| DK158893C (da) * | 1988-06-27 | 1991-01-21 | Krueger As I | Fremgangsmaade og anlaeg til biologisk rensning af spildevand ved aktivslammetoden |
| US5156742A (en) * | 1992-02-25 | 1992-10-20 | Smith & Loveless, Inc. | Liquid treatment method and apparatus |
| KR930021554A (ko) * | 1992-04-11 | 1993-11-22 | 히로시 구와시마 | 오수정화방법 및 오수정화장치 |
| US5352357A (en) * | 1993-02-18 | 1994-10-04 | Perry Cliff R | Waste water treatment system |
| US5531894A (en) * | 1993-11-18 | 1996-07-02 | Orenco Systems, Inc. | Method of treating wastewater |
| US5624563A (en) * | 1995-08-25 | 1997-04-29 | Hawkins; John C. | Process and apparatus for an activated sludge treatment of wastewater |
| FR2782508B1 (fr) * | 1998-08-20 | 2000-11-03 | Suez Lyonnaise Des Eaux | Procede et installations de traitement d'effluents de petites collectivites |
| US6238563B1 (en) * | 1999-05-04 | 2001-05-29 | Carroll Industries, Inc. | Filtered sanitation system |
| US7396466B2 (en) * | 2003-05-01 | 2008-07-08 | Tetra Process Technologies Seven Trent Services Company | Method and system for filtration of wastewater |
| US6830689B2 (en) * | 2003-05-05 | 2004-12-14 | United States Filter Corporation | Process for removing phosphorus from wastewater utilizing a triple basin wastewater treatment system |
-
2003
- 2003-08-01 FR FR0309558A patent/FR2858316B1/fr not_active Expired - Fee Related
-
2004
- 2004-07-27 AU AU2004263334A patent/AU2004263334A1/en not_active Abandoned
- 2004-07-27 CN CNB2004800251076A patent/CN100402443C/zh not_active Expired - Fee Related
- 2004-07-27 BR BRPI0413181 patent/BRPI0413181A/pt not_active IP Right Cessation
- 2004-07-27 US US10/566,278 patent/US7390400B2/en not_active Expired - Fee Related
- 2004-07-27 EP EP04767793A patent/EP1654199A1/fr not_active Withdrawn
- 2004-07-27 ES ES04767793T patent/ES2258419T1/es active Pending
- 2004-07-27 WO PCT/FR2004/002011 patent/WO2005014493A1/fr not_active Ceased
- 2004-07-27 DE DE2004767793 patent/DE04767793T1/de active Pending
-
2006
- 2006-01-30 MA MA28767A patent/MA27916A1/fr unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0524794A1 (fr) * | 1991-07-26 | 1993-01-27 | Thames Water Utilities Limited | Procédé et dispositif pour le traitement de fluides |
| JPH06114388A (ja) * | 1992-10-01 | 1994-04-26 | Toshiba Corp | 生物ろ過方法 |
| US5795481A (en) * | 1995-02-02 | 1998-08-18 | Otv Omnium De Traitements Et De Valorisation S.A. | Process for the treatment of aqueous effluents on biofilters or other devices making use of fixed cultures |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 018, no. 400 (C - 1230) 26 July 1994 (1994-07-26) * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2858316A1 (fr) | 2005-02-04 |
| CN100402443C (zh) | 2008-07-16 |
| BRPI0413181A (pt) | 2006-10-03 |
| ES2258419T1 (es) | 2006-09-01 |
| CN1845878A (zh) | 2006-10-11 |
| US20060186027A1 (en) | 2006-08-24 |
| AU2004263334A1 (en) | 2005-02-17 |
| EP1654199A1 (fr) | 2006-05-10 |
| US7390400B2 (en) | 2008-06-24 |
| DE04767793T1 (de) | 2007-02-22 |
| MA27916A1 (fr) | 2006-05-02 |
| FR2858316B1 (fr) | 2006-02-03 |
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