Method for treatment of waste water

Details Method for treatment of waste water Method for treatment of waste water

1990-12-05

1992-09-08

Hruskoci, Peter

Liquid purification or separation

Processes

Chemical treatment

210760, 210762, 502302, 502303, 502304, C02F 172, C02F 178

Patent

active

051455870

ABSTRACT:
A method for the treatment of waste water, which comprises wet oxidizing said waste water with a molecular oxygen-containing gas of an amount 1.0 to 1.5 times the amount thereof theoretically necessary for decomposing at least one substance selected from the group consisting of organic substances and inorganic substances present in said waste water to nitrogen, carbon dioxide, and water at a temperature not exceeding 370.degree. C. under a pressure enough for said waste water to retain a liquid phase in the presence of a solid catalyst comprising of a first catalytic component formed of titanium dioxide, a second catalytic component formed of the oxide of an element of lanthanide series, and a third catalytic component containing at least one metal selected from the group consisting of manganese, iron, cobalt, nickel, tungsten, copper, silver, gold, platinum, palladium, rhodium, ruthenium, and iridium or a water-insoluble or sparingly water-soluble compound of said metal.

REFERENCES:
patent: 3823088 (1974-07-01), Box, Jr. et al.
patent: 3988259 (1976-10-01), Ray
patent: 4141828 (1979-02-01), Okada et al.
patent: 4268399 (1981-05-01), Box, Jr. et al.
patent: 4294706 (1981-10-01), Kakihara et al.
patent: 4751005 (1988-06-01), Mitsui et al.

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