TREATMENT METHOD FOR CONTAMINATED SOIL

摘要

PROBLEM TO BE SOLVED: To provide a treatment method for contaminated soil which method prevents the expansion of contamination by reducing the moisture holding capacity of contaminated soil by utilizing the working of nature without installing highly expensive special equipment and which method can perform a thermal melting treatment for making contaminated soil harmless at a low fuel expense. SOLUTION: The treatment method comprises the following steps: a growing step wherein a variety of plant from which a vegetable oil is produced is planted or is sowed and raised; an excavation step wherein the surface layer of contaminated soil in which the plant has grown is excavated; a separation step wherein a matter unsuitable for melting is separated and removed from the excavated soil yielded in the excavation step; and a thermal melting step wherein the excavated soil after the separation step is made harmless with a melting furnace 6. A fuel oil prepared by purifying a vegetable oil produced from the plant having grown in the growing step is used as the fuel oil used in the thermal melting step. COPYRIGHT: (C)2005,JPO&NCIPI