| 摘要 |
PROBLEM TO BE SOLVED: To completely stabilize a heavy metal-containing waste such as a general or industrial waste or a contaminated soil to prevent secondary pollution by preparing a treating agent for the heavy metal-containing waste, in which a latent hydraulic material is incorporated. SOLUTION: At the time of stabilizing the incineration ash of a municipal waste or the industrial waste, containing the heavy metals, the treating agent for the heavy metal-containing waste, in which the latent hydraulic material is incorporated, is used. As the latent hydraulic material, at least one kind selected from a blast furnace water granulated slag, a converter slag, lime stone and silica fume is mentioned. And a dispersing agent and water are incorporated in the treating agent and as the dispersing agent, a high polymer having a carboxylic group or the salt in the molecule is used. Further, a water soluble high polymer or a water soluble sulfide is incorporated in the treating agent as a thickener and as the water soluble sulfide, one or more kinds selected from CaSx (in the formula, (x) expresses 1-5) is used and calcium superphosphate is incorporated as a water soluble phosphate. |
