CLEANING METHOD FOR CADMIUM-CONTAINING SOIL

摘要

PROBLEM TO BE SOLVED: To clean soil by efficiently removing cadmium from cadmium-containing soil. SOLUTION: A cleaning method for the cadmium-containing soil comprises cleaning the cadmium-containing soil by calcium chloride solution of 0.01-0.5M at least one time to decrease available cadmium concentration to≤0.3mg/kg and then cleaning the cadmium-containing soil by water till concentrations of water-soluble calcium and water-soluble chlorine are decreased to≤2g/kg and≤3.5g/kg, respectively and EC value of the soil is decreased to≤2mS/cm. COPYRIGHT: (C)2004,JPO