Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1992-05-19
1995-01-31
Straub, Gary P.
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
588215, 588221, 210903, 210909, 210749, A62D 300, B09B 300, A61L 1100, C02F 168
Patent
active
053860799
ABSTRACT:
Wastewaters which are contaminated with heterocyclic aromatic compounds, especially wastewaters contaminated with biocidal heterocyclic aromatic compounds, or the by-products and intermediates thereof, can be treated to largely or even substantially completely degrade the heterocyclic aromatic rings by a process which comprises either adjusting the pH of said wastewaters to at least 11 and heating in a sealed vessel at a temperature of 120.degree. C. to 175.degree. C., or adjusting the pH of said wastewaters to 2.5 or less and heating in a sealed vessel at a temperature of 130.degree. C. to 175.degree. C., for an effective length of time.
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MacDonald Robert D.
Munson Robert E.
Ciba-Geigy Corporation
Mansfield Kevin T.
Straub Gary P.
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