放射性物質、基準値未満に　原発処理水の再浄化試行―東電

　東京電力は１５日、福島第１原発から出る汚染水を浄化した処理水について「二次処理」（再浄化）を試行したところ、取り除くことができないトリチウム以外の主な放射性物質が基準値未満になったと発表した。浄化装置「ＡＬＰＳ」（アルプス）の性能確認のため、９月から実施していた。
　東電によると、原発構内で保管する処理水約１２３万トンのうち、約７割が放射性物質の基準値を上回っている。試行で基準値の約２２００倍の放射性物質を含む処理水約１０００トンをＡＬＰＳに通した結果、基準値を下回ったという。今後、保管する処理水の再浄化を進め、基準値未満にするとしている。
　処理水を保管するタンクは２０２２年秋ごろに満杯になるとされており、政府は海洋や大気中への放出を有力な選択肢として検討を進めている。（2020/10/15-21:17）

Tokyo Electric Power Company Holdings Inc. has said that radioactive substances other than tritium in treated water at its disaster-crippled Fukushima No. 1 nuclear power plant were reduced to levels below national standards through secondary treatment work.
   TEPCO has been conducting the additional clarification process at the meltdown-hit plant in Fukushima Prefecture, northeastern Japan, since September to test the performance of water cleanup equipment called the Advanced Liquid Processing System, or ALPS. Tritium, however, cannot be removed by any existing systems.
   According to TEPCO, some 70 pct of all 1.23 million tons of treated water stored at the power plant contained radioactive substances above the standards.
   The levels fell below the limits after some 1,000 tons of treated water containing radioactive substances at levels 2,200 times the national standards were processed through the ALPS equipment, the company said on Thursday.
   TEPCO said that it will continue to conduct the secondary treatment process on treated water stored at the power plant to bring down radioactive substances to levels below the standards.