STABILIZER FOR HEAVY METAL, STABILIZING TREATMENT OF HEAVY METAL, USE OF SUBSTANCE CONTAINING HEAVY METAL AND DEVICE FOR STABILIZING TREATMENT OF HEAVY METAL

摘要

PROBLEM TO BE SOLVED: To obtain a stabilizer for heavy metals capable of stabilizing the heavy metals by adsorbing and capturing the remaining heavy metals after adjusting pH of a substance containing the heavy metals, improving a handling property and a working safety at a low cost and useful for the treatment of a smut, etc. ;SOLUTION: This stabilizer for heavy metals contains at least a first component such as phosphoric acid, a primary phosphoric acid salt, a secondary phosphoric acid salt, a tripolyphosphoric acid salt and a hexametaphosphoric acid salt, capable of forming insoluble heavy metal compounds by reacting with the heavy metal components in a substance containing heavy metals while performing an adjustment of pH, and a second component such as thiourea, a silicic acid salt, an aluminic acid salt, an alginic acid salt, a Japanese acid clay, an activated clay, a bentonite, a diatomite, a gypsum, an artificial zeolite, a flyash, a silica fume, a synthetic aluminum silicate, a silica, a white carbon and a silica gel, capable of stabilizing the heavy metals by adsorbing and capturing the remaining heavy metal components. Further, it is preferable to perform the stabilization treatment of the heavy metals by using the above stabilizer for heavy metals.;COPYRIGHT: (C)1998,JPO