TREATMENT EQUIPMENT AND TREATMENT METHOD FOR CYANOGEN-CONTAINING SOLUTION AND METHOD FOR PRODUCING SOLUTION HAVING REDUCED CYANOGEN IONS BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method and equipment in which, to a cyanide ion-containing solution, rhodanide treatment and effective treatment for polysulfides and sulfides generated thereby are combined.SOLUTION: Provided is solution treatment equipment comprising: (1) a means of adding a polysulfide to a cyanide ion-containing solution; and (2) a means of blowing an oxygen-containing gas in the presence of an oxidation-reduction catalyst after that.