WASTES DISPOSING MATERIAL AND METHOD FOR DISPOSING OF WASTES

摘要

A material for disposing of harmful metals contained in wastes, particularly one efficacious against alkaline incineration dust discharged from refuse incinerators for which it has been difficult to prevent the elution of harmful metals by the solidification with cement according to the prior art; and a method therefor. This method comprises mixing 100 parts by weight of wastes containing at least one harmful metal selected from the group consisting of lead, chromium, copper and zinc with 3 to 30 parts by weight of a wastes-disposing material mainly comprising at least one member selected from the group consisting of aluminum hydroxide exhibiting a noncrystalline structure as analyzed by X-ray diffraction, powdery porous inorganic adsorbents, water-soluble phosphate salts and water-soluble carbonate salts and, if necessary, water, and kneading the obtained mixture. The disposing material can be applied in the disposal of slurried sludge or dehydrated cake sludge discharged from semiconductor factories or plating works through the disposal of wastewater, harmful dust collected in the working area fitted with electric furnaces or melting kilns in steel making works for the conservation of working atmosphere, soot and dust from melting furnaces for municipal refuse, soil polluted by the landfill or throwing-away of wastes, and so on.