| abstract |
A method for efficiently purifying cadmium-containing paddy soil is provided. The cadmium-containing paddy soil is washed with a chemical aqueous solution to extract cadmium, the cadmium is separated into soil and supernatant water by standing, the extracted cadmium is discharged as supernatant water, and further diluted and washed with water. In the purification method, a method for purifying cadmium-containing paddy soil, wherein cadmium-containing washing wastewater is collected in a part of the paddy field to be washed, and the wastewater is neutralized or alkali-treated at the position to accumulate cadmium. [Selection figure] None |