METHOD FOR PURIFYING CADMIUM-CONTAINING PADDY SOIL

摘要

A method for purifying cadmium-containing paddy soil characterized by gathering a detergent drain containing cadmium at one place in a paddy to be washed, subjecting the drain to neutralization or alkali treatment at the place, and accumulating cadmium, in a in-place purification method including washing cadmium-containing paddy soil by a drug solution to extract cadmium, separating the resultant into soil and supernatant by standing, draining the extracted cadmium as supernatant, and further performing a diluent washing with water. The cadmium-containing paddy soil can be efficiently purified.