DECONTAMINATION METHOD OF POND OR THE LIKE WHILE PREVENTING OUTFLOW AND DISPERSION OF CONTAMINANT CONTAINING RADIOACTIVE MATERIALS, BY ADSORBING THE CONTAMINANT CONTAINING THE RADIOACTIVE MATERIALS BY SPRAYING GRANULAR AND POWDERY ZEOLITE INTO THE POND OR THE LIKE BY USING FLYING BODY OR THE LIKE SUCH AS HELICOPTER

摘要

PROBLEM TO BE SOLVED: To provide a decontamination method for removing a contaminant containing radioactive materials in a pond or the like speedily and surely over a wide range.SOLUTION: Since a contaminant containing radioactive materials is deposited on a bottom part or the like of a pond or the like, granular and powdery zeolite is sprayed in the air by using a flying object or the like from above the pond or the like, to thereby cover the contaminant with the zeolite, a surface of the bottom part or the like containing the contaminant. Thus, the contaminant is adsorbed and sealed by the zeolite, to thereby prevent floating and dispersion of the contaminant.