Oxidation of wastewaters

Details Oxidation of wastewaters Oxidation of wastewaters

1986-11-13

1988-08-30

Wyse, Tom

Liquid purification or separation

Processes

Chemical treatment

210761, 210762, 210909, C02F 172

Patent

active

047675438

ABSTRACT:
The present invention relates to an improved process for the wet oxidation of water soluble organic pollutants or of an aqueous suspension of organic pollutants. In the contacting of an oxidizing gas and a polluted aqueous phase, the improvement comprises forming a fine mist of the polluted aqueous phase in the presence of the oxidizing gas, thereby increasing the interfacial area between the gas and the polluted aqueous phase. Then the formed mist is introduced into a heated reaction chamber under pressure, thereby enhancing the rate of the destructive oxidation of the organic pollutant by the increase in mass transfer between the gaseous phase and the aqueous mist, the reaction temperature being selected to favor rapid destruction of the pollutant without the formation of stable intermediate reaction products. After destruction of the pollutants, the reaction mixture is allowed to flash off at a pressure lower than the reaction pressure.

REFERENCES:
patent: 3661778 (1972-09-01), Pradt
patent: 3852192 (1974-03-01), Fassell et al.
patent: 3907678 (1975-09-01), Pradt et al.
patent: 4012321 (1977-03-01), Koubek
patent: 4294706 (1981-10-01), Kakihara et al.
patent: 4670162 (1987-06-01), Robey

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