PROCESS FOR SUPERCRITICAL WATER OXIDATION OF CATIONIC EXCHANGE RESIN USED IN NUCLEAR POWER

A process for supercritical water oxidation of a cationic exchange resin used in a nuclear power plant is provided to remove additional post-processing equipment by not volatilizing a Co metal to a radioactive metal gas. A process for supercritical water oxidation of a cationic exchange resin used in a nuclear power plant includes the steps of: separating cationic exchange resin waste from ion exchange resin waste mixed with cationic and anodic exchange resins by using a fluidized bed specific gravity difference separator; manufacturing a slurry by mixing the separated cationic exchange resin waste with water and grinding the mixture; mixing additive for neutralizing sulfonic acid component with the slurry; increasing a temperature and a pressure near to a critical point of the water by quantitatively injecting the mixed slurry; oxidizing and decomposing an organic matter of the slurry in a supercritical condition of water by mixing the heated slurry with an oxidizer; heat-exchanging the slurry with processing water, cooling the slurry, and reducing the pressure to a normal pressure; and separating a gas and the processing water.