METHOD FOR THE DESTRUCTION OF HALOGENATED PARA- OR ORTHO-SUBSTITUTED HYDROXYANILINE

Die vorliegende Erfindung betrifft Verfahren zum Abbau halogenierter, para- oder ortho-Hydroxyaniline aus wässrigen Medien, vorzugsweise Chlor- oder Brom-substituierte para- oder ortho-Hydroxyaniline. The invention relates to a method for degrading halogenated p-hydroxyaniline or o-hydroxyaniline. T...

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Bibliographic Details
Main Author JORDAN, Hartwig
Format Patent
LanguageEnglish
French
German
Published 20.11.2019
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:Die vorliegende Erfindung betrifft Verfahren zum Abbau halogenierter, para- oder ortho-Hydroxyaniline aus wässrigen Medien, vorzugsweise Chlor- oder Brom-substituierte para- oder ortho-Hydroxyaniline. The invention relates to a method for degrading halogenated p-hydroxyaniline or o-hydroxyaniline. The invention relates to a method for degrading halogenated para-hydroxyanilines or o-hydroxyanilines,preferably chlorine or bromine substituted para-hydroxyanilines or o-hydroxyanilines, from an aqueous medium. The invention relates to a method for degrading halogenated para-hydroxyaniline or halogenated o-hydroxyaniline from an aqueous medium, the aqueous medium being treated with an oxygen-containing gas, preferably air, at a pH of 10 to 14 at a temperature of from 70 DEG C to 100 DEG C. The invention also relates to a method for degrading halogenated para-hydroxyaniline or halogenated o-hydroxyaniline from an aqueous medium. It has now been surprisingly found that the AOX value of an aqueous medium is significantly increased when an oxygen-containing gas, preferably air, is introduced into the halogenated para-hydroxyaniline or o-hydroxyaniline-containing aqueous medium at a temperature of 70 DEG C to 100 DEG C at a pH of 10 to 14.
Bibliography:Application Number: EP20180173100