FR2414481A1 - Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent - Google Patents

Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent

Info

Publication number
FR2414481A1
FR2414481A1 FR7800877A FR7800877A FR2414481A1 FR 2414481 A1 FR2414481 A1 FR 2414481A1 FR 7800877 A FR7800877 A FR 7800877A FR 7800877 A FR7800877 A FR 7800877A FR 2414481 A1 FR2414481 A1 FR 2414481A1
Authority
FR
France
Prior art keywords
effluent
esp
chlorination
aldehyde
treating
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
FR7800877A
Other languages
French (fr)
Other versions
FR2414481B1 (en
Inventor
Pierre Ferradini
Alain Petit
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.)
Rhone Poulenc Industries SA
Original Assignee
Rhone Poulenc Industries 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 Rhone Poulenc Industries SA filed Critical Rhone Poulenc Industries SA
Priority to FR7800877A priority Critical patent/FR2414481A1/en
Publication of FR2414481A1 publication Critical patent/FR2414481A1/en
Application granted granted Critical
Publication of FR2414481B1 publication Critical patent/FR2414481B1/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

Treatment of the effluent comprising =6C aliphatic aldehyde cpds. and their halogenated derivatives, =4C chlorinated hydrocarbons and/or carboxylic acids and their salts in which the pH of the effluent is raised to 9-12 addn. of alkaline soln, at 45-75 degrees C, comprises further adjusting the pH to 0.5-6 and then incorporating free adhesive or a substance capable of releasing chlorine. The process is partic. applied to effluent from the mfr. of 1,2-dichloroethane, by oxychlorinated of ethylene. The known alkali treatment to decompose the choral and other cpds. results in an aq. effluent of high COD. The above improvement is simple, economic and enables a reduction of the COD-level by 50-80% compared to without the chlorine treatment.
FR7800877A 1978-01-13 1978-01-13 Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent Granted FR2414481A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7800877A FR2414481A1 (en) 1978-01-13 1978-01-13 Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7800877A FR2414481A1 (en) 1978-01-13 1978-01-13 Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent

Publications (2)

Publication Number Publication Date
FR2414481A1 true FR2414481A1 (en) 1979-08-10
FR2414481B1 FR2414481B1 (en) 1982-12-31

Family

ID=9203410

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800877A Granted FR2414481A1 (en) 1978-01-13 1978-01-13 Treating aq. effluents contg. aldehyde(s) by chlorination - to reduce chemical oxygen demand esp. of oxychlorination effluent

Country Status (1)

Country Link
FR (1) FR2414481A1 (en)

Also Published As

Publication number Publication date
FR2414481B1 (en) 1982-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse