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FR2373492A1 - Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting - Google Patents

Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting

Info

Publication number
FR2373492A1
FR2373492A1 FR7637185A FR7637185A FR2373492A1 FR 2373492 A1 FR2373492 A1 FR 2373492A1 FR 7637185 A FR7637185 A FR 7637185A FR 7637185 A FR7637185 A FR 7637185A FR 2373492 A1 FR2373492 A1 FR 2373492A1
Authority
FR
France
Prior art keywords
water
waste water
lime
purifying waste
intermediate area
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
FR7637185A
Other languages
French (fr)
Other versions
FR2373492B1 (en
Inventor
Henri Roques
Andre Girou
Amador Esparza
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7637185A priority Critical patent/FR2373492A1/en
Publication of FR2373492A1 publication Critical patent/FR2373492A1/en
Application granted granted Critical
Publication of FR2373492B1 publication Critical patent/FR2373492B1/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
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/302—Treating pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/303—Burning pyrogases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/304—Burning pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/12—Sludge, slurries or mixtures of liquids
    • 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
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Purifying waste water contg. pollutants in soln. and in suspension comprises adding to the water lime and CO2 to form calcium carbonate crystals. The water is left in the presence of the crystals for a sufficient time to absorb the materials in soln. and to flocculate the material in suspension. The sludge formed is then decanted and the purified water sepd.. The process is carried out in a reactor comprising an external reservoir with an outlet for extracting the sludge at the bottom and means for drawing off the purified water at the top. In the intermediate area is provided means for introducing CO2 bubbles near the bottom of the intermediate area; at least one conduit for feeding milk of lime or water and lime into the intermediate area and at least one other conduit feeding in the waste water. The process provides a physico-chemical method which is both very economic and gives excellent results independently of variations in the water treated. It may be used alone or in combination with other known processes.
FR7637185A 1976-12-08 1976-12-08 Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting Granted FR2373492A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7637185A FR2373492A1 (en) 1976-12-08 1976-12-08 Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7637185A FR2373492A1 (en) 1976-12-08 1976-12-08 Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting

Publications (2)

Publication Number Publication Date
FR2373492A1 true FR2373492A1 (en) 1978-07-07
FR2373492B1 FR2373492B1 (en) 1981-02-13

Family

ID=9180878

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7637185A Granted FR2373492A1 (en) 1976-12-08 1976-12-08 Purifying waste water contg. soluble and insoluble pollutants - by adding lime and carbon di:oxide, reacting, then decanting

Country Status (1)

Country Link
FR (1) FR2373492A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426024A1 (en) * 1978-05-18 1979-12-14 Dhv Raadgevend Ing METHOD AND APPARATUS FOR CHEMICAL REDUCTION OF THE PHOSPHATE CONTENT OF WATER
FR2490783A1 (en) * 1980-09-19 1982-03-26 Shinryo Air Cond PROCESS AND APPARATUS FOR THE INCINERATION OF RESIDUAL SLUDGE
FR2576893A1 (en) * 1985-02-01 1986-08-08 Soaf METHOD AND INSTALLATION FOR TREATING WASTE WATER
EP0672624A1 (en) * 1994-02-21 1995-09-20 Ecc International Limited Treatment of waste water
NL1002364C2 (en) * 1996-02-16 1997-08-19 Dhv Water Bv Fluorine compound removal from gas streams

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426024A1 (en) * 1978-05-18 1979-12-14 Dhv Raadgevend Ing METHOD AND APPARATUS FOR CHEMICAL REDUCTION OF THE PHOSPHATE CONTENT OF WATER
FR2490783A1 (en) * 1980-09-19 1982-03-26 Shinryo Air Cond PROCESS AND APPARATUS FOR THE INCINERATION OF RESIDUAL SLUDGE
FR2576893A1 (en) * 1985-02-01 1986-08-08 Soaf METHOD AND INSTALLATION FOR TREATING WASTE WATER
EP0190975A1 (en) * 1985-02-01 1986-08-13 SOAF: Société Anonyme dite Process and installation for treating waste water
EP0672624A1 (en) * 1994-02-21 1995-09-20 Ecc International Limited Treatment of waste water
NL1002364C2 (en) * 1996-02-16 1997-08-19 Dhv Water Bv Fluorine compound removal from gas streams

Also Published As

Publication number Publication date
FR2373492B1 (en) 1981-02-13

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Legal Events

Date Code Title Description
ST Notification of lapse