Process for working up effluents containing nitro-hydroxy-aromat

Details Process for working up effluents containing nitro-hydroxy-aromat Process for working up effluents containing nitro-hydroxy-aromat

1979-04-06

1980-10-28

Wyse, Thomas G.

Liquid purification or separation

Processes

210737, C02C 500

Patent

active

042305675

ABSTRACT:
The invention concerns a process for working up an effluent containing nitro-hydroxy-aromatic compounds which comprises heating said effluent to 150.degree. C. to 500.degree. C. with the exclusion of air and oxygen and under elevated pressure. The process results in a decrease of nitro-hydroxy-aromatic compound concentration in the effluent to below 20 ppm. and the resulting material can then be fed to a microbiological sewage plant for further working up, without the microorganisms therein being killed by the bactericidally active nitro-hydroxy-aromatic compounds.

REFERENCES:
patent: 3350259 (1967-10-01), Herrick et al.
patent: 3762989 (1973-10-01), Timpe
patent: 3993559 (1976-11-01), Oparsky et al.
patent: 4013757 (1977-03-01), Berkowitz
patent: 4066835 (1978-01-01), Hahn et al.

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