TREATING METHOD FOR AQUEOUS SOLUTION CONTAINING METAL FLUORIDE

摘要

PROBLEM TO BE SOLVED: To provide a treating method for an aqueous solution containing a metal fluoride by which an expensive metal contained in waste liquid generated by acid washing is recovered as resources, the amount of industrial wastes is reduced and an agent used for recovering the metal can be reused.

SOLUTION: The treating method for the aqueous solution containing the metal fluoride comprises the following steps A to C. (step A) a step for adding ammonium hydroxide and/or ammonia to the aqueous solution; (step B) a step for separating the precipitate generated in the step A and (step C) a step for electrodialysing the aqueous solution separated from the precipitate in the step B.

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