FR2431996A1 - Dechromatation electrolytique des effluents - Google Patents

Dechromatation electrolytique des effluents

Info

Publication number
FR2431996A1
FR2431996A1 FR7822451A FR7822451A FR2431996A1 FR 2431996 A1 FR2431996 A1 FR 2431996A1 FR 7822451 A FR7822451 A FR 7822451A FR 7822451 A FR7822451 A FR 7822451A FR 2431996 A1 FR2431996 A1 FR 2431996A1
Authority
FR
France
Prior art keywords
effluent
passing
flocculation
followed
removing chromium
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
FR7822451A
Other languages
English (en)
Other versions
FR2431996B1 (fr
Inventor
Jacques Miquel
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to FR7822451A priority Critical patent/FR2431996A1/fr
Publication of FR2431996A1 publication Critical patent/FR2431996A1/fr
Application granted granted Critical
Publication of FR2431996B1 publication Critical patent/FR2431996B1/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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
    • 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
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

La présente invention concerne un procédé pour le traitement des eaux contenant du chrome. Plus particulièrement il s'agit d'un procédé de déchromatation d'eau contenant du chrome caractérisé en ce que : a. l'eau contenant le chrome est passée dans une cellule à électrolyse à anode soluble libérant des ions fer; b. l'effluent de l'étape a est introduit dans un récipient de réduction-dégazage maintenu sous agitation rapide; c. l'effluent de l'étape b est introduit dans un récipient de floculation maintenu sous agitation lente; d. puis l'effluent de l'étape c est introduit dans un décanteur et la phase liquide constitue l'eau déchromatée et la phase solide est éliminée, une partie pouvant être recyclée dans le récipient de floculation. Ce procédé est plus particulièrement utilisable pour la déchromatation des eaux contenant - de 250 mg/l de chrome hexavalent.
FR7822451A 1978-07-28 1978-07-28 Dechromatation electrolytique des effluents Granted FR2431996A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7822451A FR2431996A1 (fr) 1978-07-28 1978-07-28 Dechromatation electrolytique des effluents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7822451A FR2431996A1 (fr) 1978-07-28 1978-07-28 Dechromatation electrolytique des effluents

Publications (2)

Publication Number Publication Date
FR2431996A1 true FR2431996A1 (fr) 1980-02-22
FR2431996B1 FR2431996B1 (fr) 1982-01-22

Family

ID=9211340

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822451A Granted FR2431996A1 (fr) 1978-07-28 1978-07-28 Dechromatation electrolytique des effluents

Country Status (1)

Country Link
FR (1) FR2431996A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431995A1 (fr) * 1978-07-27 1980-02-22 Vellas Jean Procede pour le traitement par voie oligodynamique de liquides et dispositif pour sa mise en oeuvre
FR2489806A1 (fr) * 1980-09-11 1982-03-12 Electricite De France Dispositif d'epuration electrolytique des eaux residuaires
DE4024424A1 (de) * 1990-08-01 1992-02-06 Iwatech Konrad Gmbh Verfahren und vorrichtung zum aufbereiten von verunreinigten fluessigkeiten
FR2728253A1 (fr) * 1994-12-16 1996-06-21 Tovarischestvo S Ogranichennoi Procede d'epuration de l'eau par traitement electrochimique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926754A (en) * 1972-02-11 1975-12-16 Andco Inc Electrochemical contaminant removal from aqueous media
DE2617625A1 (de) * 1976-04-22 1977-10-27 Theo Benning Elektrogeraete Kg Vorrichtung zur ueberpruefung der kapazitaet von batterien

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926754A (en) * 1972-02-11 1975-12-16 Andco Inc Electrochemical contaminant removal from aqueous media
DE2617625A1 (de) * 1976-04-22 1977-10-27 Theo Benning Elektrogeraete Kg Vorrichtung zur ueberpruefung der kapazitaet von batterien

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXRV/75 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431995A1 (fr) * 1978-07-27 1980-02-22 Vellas Jean Procede pour le traitement par voie oligodynamique de liquides et dispositif pour sa mise en oeuvre
FR2489806A1 (fr) * 1980-09-11 1982-03-12 Electricite De France Dispositif d'epuration electrolytique des eaux residuaires
DE4024424A1 (de) * 1990-08-01 1992-02-06 Iwatech Konrad Gmbh Verfahren und vorrichtung zum aufbereiten von verunreinigten fluessigkeiten
FR2728253A1 (fr) * 1994-12-16 1996-06-21 Tovarischestvo S Ogranichennoi Procede d'epuration de l'eau par traitement electrochimique

Also Published As

Publication number Publication date
FR2431996B1 (fr) 1982-01-22

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Legal Events

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