| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid water supply impossibility due to deposition of suspended particles and pump failure and to reduce amount of industrial waste by reducing the amount of precipitates. <P>SOLUTION: The treating method of soil comprises: an indirect heat desorption process 11 for indirectly heating organic halogen compound-containing soil at temperature not lower than the boiling point of the organic halogen compound so as to evaporate water and the organic halogen compound and to obtain dry clarified soil not including moisture; a decomposing process 12 for decomposing the organic halogen compound by heating the evaporated organic halogen compound together with water; a gas cooling process 13 for quenching exhaust gas coming out of the decomposing process to temperature not higher than the boiling point of water so as to condense water contained in the exhaust gas; a water treatment process 14 for performing water treatment so as to remove suspended particles from the condensed water; and a flocculating sedimentation process 15 for subjecting treated water obtained at the water treatment process to water treatment by flocculating sedimentation so as to remove heavy metals and then to discharge the treated water to a sewer or a public water area. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
