| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a contaminant concentration and to reduce processing costs and a waste amount. <P>SOLUTION: There is provided a cleaning processing method including a first classification process 1 of separating coarse particles through wet sieve processing on contaminated soil G0 to obtain slurry sediment G1; a second classification process 2 of classifying the sediment G1 into sand S1 and fine particles S2 including a contaminant through hydrocyclone processing; a cleaning process 4 of collecting the sand S1 with froth F produced through flotation processing; a radioactive material extraction process 5 of extracting a radioactive material included in the cleaned sand S3 obtained in the cleaning process 4 with a solution of a radioactive material extracting agent, and further obtaining low-concentration cleaned sand S4 having lower concentration through dehydration processing; and an adsorption process 6 of removing the radioactive material from the froth F and a processing solution E using the fine particles S as an adsorbing material, separating into precipitated sludge and water through concentration precipitation, and separating into concentrated residue T and processing water W. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
