Mitsui Toatsu Chemicals, Incorporated

Yasuto Iwai

Atsuhiko Hiai

Seiya Iguchi

Masayoshi Okabe

Naotoshi Seki

A process for the liquid phase oxidation of an organic substance-containing effluent which comprises subjecting said effluent to a liquid phase oxidation treatment in the presence of a copper catalyst at a copper ion concentration of 50-5000 ppm and also in presence of an ammonium ion concentration of five or more times the copper ion concentration thereby to oxidize the organic substances in the effluent, and recovering the copper catalyst from the treated effluent for reuse. The recovery of the copper catalyst may be effected either by a process in which the copper catalyst is separated as a precipitate or by a process using a resin adsorption.

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Takaishi, Japan

Yasuto Iwai