Pressure-hydrolytic treatment of effluent

Details Pressure-hydrolytic treatment of effluent Pressure-hydrolytic treatment of effluent

1979-04-30

1981-01-20

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chemical treatment

210763, 210906, 210766, C02F 172

Patent

active

042461049

ABSTRACT:
A process for the chemical treatment of an effluent containing at least one organic compound selected from the group consisting of an organometallic compound and an organic compound containing at least one of phosphorus, nitrogen and halogen, comprising treating the effluent hydrolytically for about 20 to 200 minutes at a temperature above about 100.degree. C. under a pressure above about 2 bars and a pH of about 1 to 14. Advantageously, a catalyst comprising activated carbon or kieselguhr is added to the effluent before the hydrolytic treatment and the hydrolytic treatment is carried out in the presence of ammonia or a primary or secondary amine. The organic compound may be an acid ester, a dye, or quaternary ammonium compound, a cyanide, a nitrile, a cyanate, an isocyanate, hydrazine, an organic derivative of hydrazine, an azo compound or an organometallic compound and the effluent may be aftertreated as with hypochlorite or H.sub.2 O.sub.2.

REFERENCES:
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patent: 3607738 (1971-09-01), Nelson
patent: 3676334 (1972-07-01), Zuckerman
patent: 3762989 (1973-10-01), Timpe
patent: 3817862 (1974-01-01), Hoke
patent: 3862296 (1975-01-01), Dotson
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patent: 4013757 (1977-03-01), Berkowitz
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Hackh's Chemical Dictionary, Grant, 4th Edition, McGraw Hill, p. 436.
Standard Methods, (13th Edition) 1971, APHA, AWWA, WPCF, pp. 518-524.
Phosphorus Removal, the State of The Art Journal WPCF, May 1969, Nesb. H, 701-713.

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