FR2313322A1 - Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages - Google Patents

Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages

Info

Publication number
FR2313322A1
FR2313322A1 FR7517466A FR7517466A FR2313322A1 FR 2313322 A1 FR2313322 A1 FR 2313322A1 FR 7517466 A FR7517466 A FR 7517466A FR 7517466 A FR7517466 A FR 7517466A FR 2313322 A1 FR2313322 A1 FR 2313322A1
Authority
FR
France
Prior art keywords
treatment
stages
biological
stage
oxidn
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
FR7517466A
Other languages
French (fr)
Other versions
FR2313322B1 (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.)
Standard Oil Co
Original Assignee
Standard Oil Co
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 Standard Oil Co filed Critical Standard Oil Co
Priority to FR7517466A priority Critical patent/FR2313322A1/en
Publication of FR2313322A1 publication Critical patent/FR2313322A1/en
Application granted granted Critical
Publication of FR2313322B1 publication Critical patent/FR2313322B1/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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/121—Multistep treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/047—Breaking emulsions with separation aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • 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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Activated Sludge Processes (AREA)

Abstract

Activated sludge treatment of effluents from chemical factories, and partic. those from petroleum refineries, is effected in four stages: (1) primary treatment by sedimentation; (2) intermediate treatment by equalisation, pH adjustment, coagulation, oxidn. and filtration; (3) secondary treatment by aeration between the stages, biological oxidn., clarification, thickening and aerobic digestion; (4) tertiary treatment by coagulation/flocculation, filtration and adsorption on activated carbon. The refinery effluent enters the plant at the sump and then into a conventional separator where considerable quantities of oil and solids are eliminated. The chemical effluent enters at compartment of the multi-compartment tank. The mixed effluents pass through pipes, to press. filters and to the biological treatment section; this comprises four stages, a contract stage where the effluent meets the activated sludge, a clarification stage, a thickening stage and a digestion stage. The decomtanminated water then flows through a second battery of filters and is rejected into a watercourse. When rejected the evacuated water contains at least 5 ppm. of dissolved oxygen so that it does not therefore lower the quality of the receiving stream. Biological degradation is improved by keeping the temp. in the equalising tank at 32.2-37.8 degrees C.
FR7517466A 1975-06-04 1975-06-04 Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages Granted FR2313322A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7517466A FR2313322A1 (en) 1975-06-04 1975-06-04 Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7517466A FR2313322A1 (en) 1975-06-04 1975-06-04 Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages

Publications (2)

Publication Number Publication Date
FR2313322A1 true FR2313322A1 (en) 1976-12-31
FR2313322B1 FR2313322B1 (en) 1981-01-09

Family

ID=9156069

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7517466A Granted FR2313322A1 (en) 1975-06-04 1975-06-04 Continuous purificn. of petroleum refinery effluents - by biological oxidn. and aeration between stages

Country Status (1)

Country Link
FR (1) FR2313322A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000048950A1 (en) * 1999-02-18 2000-08-24 Degremont Improvements to purification of effluents with activated sludge
CN109485204A (en) * 2018-11-23 2019-03-19 深圳市泰力废旧电池回收技术有限公司 A kind of ternary material producing wastewater treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000048950A1 (en) * 1999-02-18 2000-08-24 Degremont Improvements to purification of effluents with activated sludge
FR2789987A1 (en) * 1999-02-18 2000-08-25 Degremont Reduction in suspended solids of treated waste waters by extending the aeration time of activated sludge before filtration
CN109485204A (en) * 2018-11-23 2019-03-19 深圳市泰力废旧电池回收技术有限公司 A kind of ternary material producing wastewater treatment

Also Published As

Publication number Publication date
FR2313322B1 (en) 1981-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse