Process for treating waste waters containing aromatic nitro compounds

Alkaline waste waters containing 100-3000 ppm benzene and 1000-10000 ppm nitrobenzene is treated by separating undissolved benzene and/or nitrobenzene from the alkaline waste water; optionally, stripping residual benzene and/or nitrobenzene from the alkaline waste water; and heating the alkaline was...

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Bibliographische Detailangaben
Hauptverfasser: VON GEHLEN, FRANZ-ULRICH, SCHMIEDLER, JÖRG, KNAUF, THOMAS, DOHMEN, WOLFGANG
Format: Patent
Sprache:eng ; pol
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Beschreibung
Zusammenfassung:Alkaline waste waters containing 100-3000 ppm benzene and 1000-10000 ppm nitrobenzene is treated by separating undissolved benzene and/or nitrobenzene from the alkaline waste water; optionally, stripping residual benzene and/or nitrobenzene from the alkaline waste water; and heating the alkaline waste water from 150-500[deg]C under pressure in the absence of oxygen.