METHOD FOR RECOVERING AND UTILIZING VALUABLE METAL IN WASTE WATER CONTAINING METAL

摘要

PPROBLEM TO BE SOLVED: To efficiently and stably treat waste water containing metal to separate and recover valuable metal from the waste water containing metal and to reduce the occurring amount of sludge. PSOLUTION: In the recovering method for valuable metal in the waste water containing metal, the waste water containing metal is subjected to oxidation processing, so that a bivalent iron ion in the waste water is oxidized into a trivalent iron ion, and solution containing an iron hydroxide formed is filtrated with a filtering device filled up with fillers and the iron hydroxide is separated and recovered with the same filtering device. PCOPYRIGHT: (C)2004,JPO