Kabushiki Kaisha Toshiba

Toshiaki Sugimori

Masaaki Kaneko

Yohei Sato

Takaaki Murata

Seiichi Murayama

Yumi Yaita

Tatsuaki Sato

Shinya Miyamoto

Hirofumi Okabe

Tetsuo Motohashi

Rie Arai

A treatment method for a used ion exchange resin, includes: bringing a used ion exchange resin into contact with a reaction solution, the used ion exchange resin having an ion exchange group with at least a radionuclide or a heavy metal element adsorbed thereon, and the reaction solution containing an iron compound, hydrogen peroxide, and ozone; separating at least a part of the reaction solution in contact with the used ion exchange resin from the used ion exchange resin; and decomposing an organic component contained in the reaction solution separated from the used ion exchange resin.

Treatment method for used ion exchange resin

A method for processing a radioactive liquid waste containing boron of the present invention includes: a molar ratio control step of adding an alkali metal or an alkali metal compound to a radioactive liquid waste containing boron to control an alkali metal/boron molar ratio in the radioactive liquid waste to be 0.8 or more; a drying step of drying the radioactive liquid waste having the controlled molar-ratio using a dryer to form a powdered waste; a dissolving step of mixing the powdered waste with kneading water to prepare a solution; and a kneading step of adding a hydraulic inorganic solidifying material to the solution, and kneading the hydraulic inorganic solidifying material and the solution for solidification.

Method for processing radioactive liquid waste

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Shinagawa, Japan

Toshiaki Sugimori