| 摘要 |
PURPOSE:To suppress generation of a waste while enabling reuse of a radioactive nuclide adsorbent, by connecting a reaction tank, a pump for transferring a liquid treated and a filter for separating the adsorbent in series with a piping. CONSTITUTION:A reaction tank 1, a pump 2 and a filter 3 are arranged in series and the tank 1 is provided with a pipe 4 for introducing a radioactive waste liquor, an agitating device 5 and a pipe 6 for draining and transferring a treated liquid. The radioactive waste liquor is collected to the tank 1 with the pipe 4 and stirred up with the agitating device 5. Under such a condition, a hexacyanoferrate powder is added to the mixture and mixed for a fixed time. The waste liquor thus treated is transferred with the pump 2 to the filter 3 passing through the pipe 6 to separate solid from liquid. The hexacyanoferrate adheres to the surface of the filter of the device 3 to separate and trap a radioactive nuclide therewith and after a treatment thereof at an outlet, water quality is monitored to judge separating and trapping capacity. The hexacyanoferrate with lost separating/trapping capacity is backwashed and returned to the tank 1 for re-use.
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