Waste water treatment method using activated carbon

Details Waste water treatment method using activated carbon Waste water treatment method using activated carbon

1977-09-27

1980-05-20

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 40, 562513, C02B 114

Patent

active

042038359

ABSTRACT:
A method for effectively treating waste water discharged from the ammoxidation process for the production of acrylonitrile which comprises treating waste water or a preliminary oxidized liquid of said waste water with activated carbon in an adsorption and separation zone, subjecting the spent carbon slurry from said adsorption and separation zone to wet oxidation in the presence of copper values and ammonium ions at a pH of not higher than 5 in a regeneration zone to thereby regererate the spent carbon, and recycling the regenerated activated carbon to said adsorption and separation zone. The rate of regeneration of the spent carbon in the regeneration zone can be further increased by adjusting the amount of copper values to at least 1,000 ppm. Thus, the waste water containing extremely hardly decomposable substances can be effectively treated and, at the same time, the spent carbon can be regenerated with less degradation of adsorption capacity.

REFERENCES:
patent: 3150105 (1964-09-01), Ledding
patent: 3399135 (1968-08-01), Conley et al.
patent: 3442798 (1969-05-01), Schoeffel et al.
patent: 4069148 (1978-01-01), Hutton et al.
Gitchel et al., "Powdered Activated Carbon Regeneration by Wet Air Oxidation", Symposium Series of American Institute of Chemical Engineering, No. 151, vol. 71, pp. 415-422, 1975.

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