PROCESS FOR PURIFYING WASTE WATER CONTAINING PHENOL AND PHENOL FORMALDEHYDE

The invention provides a process for purifying phenoland phenol-formaldehyde containing waste water with chlorine dioxide, comprising treating the waste water with alkali or alkaline earth chlorites in the presence of formaldehyde, the ratio by weight of formaldehyde to phenol lying between 0.5 and...

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Bibliographic Details
Main Authors JUNKERMANN, HELMUT, HAFNER, VOLKER
Format Patent
LanguageEnglish
French
Published 21.10.1980
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:The invention provides a process for purifying phenoland phenol-formaldehyde containing waste water with chlorine dioxide, comprising treating the waste water with alkali or alkaline earth chlorites in the presence of formaldehyde, the ratio by weight of formaldehyde to phenol lying between 0.5 and 2:1, and the molar ratio of the sum of phenol and formaldehyde to chlorite being between 1:1.2 and 1:2.
Bibliography:Application Number: CA19770293229