FR2243159A1 - Hypochlorite removal from aq. alkaline streams - by decomposition with hydrogen peroxide, opt. added in stoichiometric excess - Google Patents

Hypochlorite removal from aq. alkaline streams - by decomposition with hydrogen peroxide, opt. added in stoichiometric excess

Info

Publication number
FR2243159A1
FR2243159A1 FR7430768A FR7430768A FR2243159A1 FR 2243159 A1 FR2243159 A1 FR 2243159A1 FR 7430768 A FR7430768 A FR 7430768A FR 7430768 A FR7430768 A FR 7430768A FR 2243159 A1 FR2243159 A1 FR 2243159A1
Authority
FR
France
Prior art keywords
opt
decomposition
added
hydrogen peroxide
hypochlorite
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
FR7430768A
Other languages
French (fr)
Other versions
FR2243159B3 (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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of FR2243159A1 publication Critical patent/FR2243159A1/en
Application granted granted Critical
Publication of FR2243159B3 publication Critical patent/FR2243159B3/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
    • C02F1/722—Oxidation by peroxides

Abstract

Thorough removal of hypochlorite ions from aq. streams is achieved by adding >=1 mole H2O2 for each mole OCl- present, at pH>8.5. Reaction is quantitative, quick independent of hypochlorite concn., without by-prod. formation and any excess H2O2 decomposes gradually. Heat of H2O2/OCl- reaction is low and the process is unaffected by presence of other chemicals, e.g. caustic alkali, Cl2, carbonates, heavy metal ions, chlorohydrocarbons, dissolved salts.
FR7430768A 1973-09-12 1974-09-11 Hypochlorite removal from aq. alkaline streams - by decomposition with hydrogen peroxide, opt. added in stoichiometric excess Granted FR2243159A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39648873A 1973-09-12 1973-09-12

Publications (2)

Publication Number Publication Date
FR2243159A1 true FR2243159A1 (en) 1975-04-04
FR2243159B3 FR2243159B3 (en) 1977-06-17

Family

ID=23567379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7430768A Granted FR2243159A1 (en) 1973-09-12 1974-09-11 Hypochlorite removal from aq. alkaline streams - by decomposition with hydrogen peroxide, opt. added in stoichiometric excess

Country Status (3)

Country Link
JP (1) JPS5056052A (en)
DE (1) DE2443680A1 (en)
FR (1) FR2243159A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299966A (en) * 1976-02-17 1977-08-22 Fujikura Ltd Treatment for removing halogen gas
US4243525A (en) * 1979-03-29 1981-01-06 Fmc Corporation Method for reducing the formation of trihalomethanes in drinking water
DE2923064A1 (en) * 1979-06-07 1980-12-11 Degussa METHOD FOR PRODUCING FINE-PARTICLE OXIDES OF METALS
JP4821361B2 (en) * 2006-02-20 2011-11-24 Ｊｆｅエンジニアリング株式会社 Ballast water treatment method

Also Published As

Publication number Publication date
FR2243159B3 (en) 1977-06-17
JPS5056052A (en) 1975-05-16
DE2443680A1 (en) 1975-03-13

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Legal Events

Date Code Title Description
ST Notification of lapse