Radioactive gaseous wastes processing device

Purpose: To obtain economical advantage by the effective constitution of the processing device and improve the adsorption performance of activated carbon to radioactive rare gases. Constitution: In order to improve the adsorption performance of activated carbon in an activated carbon type rare gas hold-up column, a temperature controller for cooling radioactive gaseous wastes is additionally provided directly before the activated carbon type rare gas hold-up column, and the temperature controller is adapted such that all of the existent dehumidifying coolers and the activated carbon type gas hold-up columns are cooled to about 50C by a common cooling device. Thus, the temperature of the activated carbon layer in the activated type rare gas hold-up columns is decreased to about 50C and the dynamic adsorption equilibrium coefficient of the activated carbon can be improved by about 15% to decay the radioactivity as much as possible. (Kawakami, Y.)