| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radioactive contaminated water removal device that efficiently recovers cesium from a contaminated water with a simplified structure and at a low processing expenditure, performs separation and recovery of precipitated cesium from a supernatant solution, and makes it possible for a decontaminated supernatant solution to be discharged to a river.SOLUTION: The radioactive contaminated water removal device is configured to: install a water-supply pipe 8 for pouring a radioactive contaminated water from an upper part at a top part of a cylindrically formed tank; provide a water spray nozzle 28 for spraying a perlite powder 24 from an upper part in the tank beside the water-supply pipe 8 at the top part of the tank; form drain valves 10 and 11 on a side wall of the tank; build a processing tank 2 having an inner diameter on a bottom side narrowed; install a precipitation chamber 14 at a lower part of the processing tank 2 via a water stop valve 12; and provide a drain valve 16 for draining a precipitate 13 into an external container at a lower part of the precipitation chamber 14. By spraying the perlite powder 24 from the water spray nozzle 28, a radioactive substance is absorbed, and a supernatant solution 30 and the precipitate 13 are separated.</p> |
