| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of treating polluted soil and device therefor in which equipment is miniaturized and continuous operation is made possible and by which dioxins can be effectively removed. SOLUTION: In a method of treating polluted soil for obtaining treated soil 13 from which dioxins in polluted soil 9 have been removed by thermal treatment of the polluted soil 9, the polluted soil 9 is heated to 400 to 600 deg.C to evaporate dioxins or partially decompose them and gas containing the evaporated dioxins is sent to a dioxin decomposition furnace 17 to heat the gas to thermally decompose the dioxins. Since the polluted soil is heated to 400 to 600 deg.C, the dioxins are evaporated or partially decomposed, the treated soil 13 from which the dioxins have been removed is obtained and a furnace 4 for heating the polluted soil 9 is miniaturized. Even if sodium chloride is contained in the polluted soil 9, gaseous chlorine is not generated and the corrosion or the like of equipment 30 is sufficiently prevented.
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