METHOD FOR TREATING ASHES CONTAINING HEAVY METAL

摘要

PROBLEM TO BE SOLVED: To provide a method for treating ashes containing heavy metal capable of suppressing the elution of heavy metal over a longer period of time than the case where a heavy metal fixing agent or neutralizer as a liquid is added to ashes containing heavy metal. SOLUTION: The method for treating ashes containing heavy metal enables the addition of a powder heavy metal fixing agent and a liquid heavy metal fixing agent to the ashes containing heavy metal, wherein the powder heavy metal fixing agent contains aluminum sulfate or aluminum sulfate and reducing ferrous and ferric salts, and the liquid heavy metal fixing agent contains aluminum sulfate and phosphoric acid-based heavy metal fixing agent, and chelate-based heavy metal fixing agent may be further added thereto. COPYRIGHT: (C)2009,JPO&INPIT