FR2369999A1 - RESIDUAL WATER TREATMENT PROCESS - Google Patents

RESIDUAL WATER TREATMENT PROCESS

Info

Publication number
FR2369999A1
FR2369999A1 FR7733626A FR7733626A FR2369999A1 FR 2369999 A1 FR2369999 A1 FR 2369999A1 FR 7733626 A FR7733626 A FR 7733626A FR 7733626 A FR7733626 A FR 7733626A FR 2369999 A1 FR2369999 A1 FR 2369999A1
Authority
FR
France
Prior art keywords
reaction zone
nitrites
nitrates
conversion
reaction
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.)
Granted
Application number
FR7733626A
Other languages
French (fr)
Other versions
FR2369999B1 (en
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.)
Ortech Corp
Original Assignee
Ortech Corp
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 Ortech Corp filed Critical Ortech Corp
Publication of FR2369999A1 publication Critical patent/FR2369999A1/en
Application granted granted Critical
Publication of FR2369999B1 publication Critical patent/FR2369999B1/fr
Granted 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L1/00—Brakes; Arrangements thereof
    • 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
    • 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
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • 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
    • C02F3/28—Anaerobic digestion processes
    • 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

Abstract

Le procédé comprend les étapes suivantes : 1. on fait passer l'eau résiduaire contenant des contaminants comprenant des matières carbonées biodégradables et des matières azotées, principalement sous une forme autre que les nitrates et/ou une forme autre que les nitrites, successivement le long de trajets de circulation à travers une première et une seconde zone de reaction, séparées mais à interconnexion liquide, contenant une boue activée microbienne, mélangée ; 2. on recycle le liquide mélangé de la seconde zone de réaction à la première zone de reaction à un débit supérieur au débit de l'eau résiduaire dans la première zone de réaction pour fournir une seule boue dans les deux zones de réaction; 3. on recycle le liquide mélangé à l'intérieur de chacune des zones de réaction pour y maintenir le liquide mélangé sensiblement à l'état de suspension; 4. on établit et on maintient des conditions sensiblement anoxiques dans la première zone de réaction pour la conversion de l'azote des nitrates et/ou des nitrites en azote gazeux et la consommation de la matière carbonée dans la conversion; 5. on établit et on maintient des conditions essentiellement aérobies dans la seconde zone de réaction pour la conversion de la matière azotée en nitrates et/ou nitrites et oxydation de la matière carbonée; 6. on détend à l'extérieur les gaz formes dans la première et la seconde zone de réaction; et 7. on sépare un effluent ayant une teneur réduite en matières carbonées biodégradables et en matières azotées de la seconde zone de réaction.The process comprises the following steps: 1. the waste water containing contaminants comprising biodegradable carbonaceous materials and nitrogenous materials, mainly in a form other than nitrates and / or a form other than nitrites, is passed successively along circulation paths through a first and second reaction zone, separated but liquid interconnected, containing mixed microbial activated sludge; 2. the mixed liquid is recycled from the second reaction zone to the first reaction zone at a rate greater than the rate of waste water in the first reaction zone to provide a single slurry in the two reaction zones; 3. the mixed liquid is recycled within each of the reaction zones to maintain the mixed liquid therein substantially in the state of suspension; 4. Substantially anoxic conditions are established and maintained in the first reaction zone for the conversion of nitrogen from the nitrates and / or nitrites to nitrogen gas and the consumption of carbonaceous material in the conversion; 5. Substantially aerobic conditions are established and maintained in the second reaction zone for the conversion of the nitrogenous material to nitrates and / or nitrites and oxidation of the carbonaceous material; 6. the gases formed in the first and second reaction zones are expanded to the outside; and 7. separating an effluent having a reduced content of biodegradable carbonaceous material and nitrogenous material from the second reaction zone.

FR7733626A 1976-11-08 1977-11-08 RESIDUAL WATER TREATMENT PROCESS Granted FR2369999A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA265,112A CA1062380A (en) 1976-11-08 1976-11-08 Waste water treatment

Publications (2)

Publication Number Publication Date
FR2369999A1 true FR2369999A1 (en) 1978-06-02
FR2369999B1 FR2369999B1 (en) 1982-12-17

Family

ID=4107220

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733626A Granted FR2369999A1 (en) 1976-11-08 1977-11-08 RESIDUAL WATER TREATMENT PROCESS

Country Status (6)

Country Link
CA (1) CA1062380A (en)
DE (1) DE2749971C2 (en)
FR (1) FR2369999A1 (en)
GB (1) GB1544341A (en)
IL (1) IL53293A (en)
ZA (1) ZA776470B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0497114A1 (en) * 1991-01-11 1992-08-05 Süd-Chemie Ag Process for purifying waste water containing phosphates and nitrogen compounds

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208173A1 (en) * 1982-03-06 1983-09-08 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin METHOD AND DEVICE FOR REMOVING THE NITROGEN FROM THE WASTEWATER BY MEANS OF A DIPPED BODY

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1487789A (en) * 1974-01-22 1977-10-05 Ontario Research Foundation Adsorption-biooxidation treatment of waste waters to remove contaminants therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0497114A1 (en) * 1991-01-11 1992-08-05 Süd-Chemie Ag Process for purifying waste water containing phosphates and nitrogen compounds

Also Published As

Publication number Publication date
DE2749971A1 (en) 1978-05-24
CA1062380A (en) 1979-09-11
DE2749971C2 (en) 1986-06-26
ZA776470B (en) 1978-08-30
IL53293A (en) 1980-11-30
FR2369999B1 (en) 1982-12-17
GB1544341A (en) 1979-04-19

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ST Notification of lapse