DECONTAMINATION METHOD OF RADIOACTIVE CONTAMINATED SOIL, ETC

PROBLEM TO BE SOLVED: To decontaminate soil, etc., contaminated with a radioactive material (cesium) by biology means.SOLUTION: The decontamination method of a radioactive contaminated soil, etc., comprises: adding an aqueous solution containing a microorganism group for promoting fermentation decomposition to wastes derived from deforestation trees including a bark of 50% or more to perform primary crushing; adding and mixing an organic fertilizer to chips obtained by the primary crushing to perform crushing again; filling the secondary crushing object in a bag formed by a material poor in water permeability and gas permeability; mixing and agitating a base member manufactured by fermenting and aging the secondary crushing object for an appropriate period of time and an object to be decontaminated, such as radioactive contaminated soil at an appropriate ratio; mixing an appropriate amount of a fermentation accelerator therewith; and maturing the resultant mixture in the state that ventilation is limited. 【課題】生物学手段で放射性物質（セシウム）で汚染された土壌等の除染を実施する。【解決手段】、樹皮５０％以上を含む伐採樹木由来の廃棄物に、発酵分解を促進する微生物群を含有する水溶液を添加して一次粉砕を行い、前記一次粉砕で得られたチップに有機肥料を添加混合して再度粉砕し、二次粉砕物を通水性及び通気性が乏しい材質で形成した袋に詰めて、適宜期間発酵熟成させて製造したベース部材と、放射能汚染土壌等の除染対象物とを適宜な比率で混合撹拌すると共に、発酵促進剤を適宜量混合し、通気を制限した状態で腐熟させてなる。【選択図】図５