| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for properly washing even a soil containing components with small diameters. <P>SOLUTION: The method includes: a washing step of eluting contaminant components by washing the soil; and a sedimentation separation step of coagulating and precipitating the soil components of the soil with small diameters in washing water. The method is for washing the soil contaminated with heavy metals or the like and includes a firing step of taking out the sediment portion of the soil components in the sedimentation separation step and subjecting the sediment portion to a heating medium to be fired. In the firing step, heavy metals and the like may be shielded in a slag generated by firing the sediment portion of the soil components to be insolubilized. <P>COPYRIGHT: (C)2012,JPO&INPIT |
