| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a treatment method of harmful substances which can efficiently recover harmful substances from plants absorbed the harmful substances to process while clarifying contaminated soil. <P>SOLUTION: There is provided the treatment method of harmful substances, wherein radioactive substance absorbing plants are cropped in a contaminated area contaminated with radioactive substances, the radioactive substances are accumulated in the radioactive substance absorbing plants, the radioactive substance absorbing plants containing the radioactive substances are harvested, and the radioactive substances contained in the radioactive substance absorbing plants are processed. The treatment method of harmful substances includes: a hydrothermal decomposition treatment step (S13) for counter-contacting the harvested radioactive substance absorbing plants with pressurized hot water, shifting the radioactive substances to the hot water to extract as hot water discharge liquid while extracting a biomass solid content in which the radioactive substances are removed from a side different from the side discharged the hot water discharge liquid; and a radioactive substance treatment step (S14) for treating the radioactive substances from the hot water discharge liquid. <P>COPYRIGHT: (C)2013,JPO&INPIT |
