VERFAHREN ZUR ENTGIFTENDEN BEHANDLUNG VON ABWASSERSCHLAEMMEN DER LEDERINDUSTRIE

VERFAHREN ZUR ENTGIFTENDEN BEHANDLUNG VON ABWASSERSCHLAEMMEN DER LEDERINDUSTRIE

A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m of solid material with sulphuric acid and/or a mineral acid mixture composed of...

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Bibliographische Detailangaben
Hauptverfasser: BAKAN,JOZSEF, BARNA,LAJOS, NAGY,FERENC, BATOR,EDIT,..DR, KISS,ZOLTAN,..DR, FARKAS,BELA, REPASI,ZOLTAN, VOEROESHAZI,MARIA
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m of solid material with sulphuric acid and/or a mineral acid mixture composed of at least 30% by weight of sulphuric acid. The acid liquid containing the heavy metal salts is separated from the slurry, and the solution is neutralized; the metal salts are precipitated, purified and the organic slurry is washed to make it metal ion- and acid-free.