| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for insolubilizing soil contaminated with a heavy metal and the like that can stably preserve the soil during long-term storage and transportation by preventing the soil from contacting air and water or being effected by sulfuric acid ions and the like contained in underground water. SOLUTION: Contaminated soil is added or mixed with a basic substance composed of 80% of a magnesium component, 10% of a calcium component, 3.5% of a silicon component, 3% of sulfur component and 1.5% of aluminum to obtain pretreated soil for insolubilization. The soil contaminated with a heavy metal and the like is stably insolubilized by adding or mixing the pretreated soil for insolubilization with a sulfate of iron or manganese. COPYRIGHT: (C)2009,JPO&INPIT |
