| 摘要 |
PROBLEM TO BE SOLVED: To resolve a problem that solidifying sodium stably for long, which is a counter ion of sulfate ion, is difficult because due to isolation of sodium, pH of interstitial water of solidified object rises and there was a fear of solving of bentonite postulated for use in underground disposal site. SOLUTION: In the disposal method for radioactive waste liquid including sodium sulfate generated out of nuclear facilities, by adding hydrogen peroxide in the waste liquid as an auxiliary agent raising mineralization reaction rate when organic compound contained in the radioactive waste liquid is mineralize by ozonation treatment and closure of nuclides in waste is raised, mineralization becomes possible and cement solid stable for long period can be obtained. COPYRIGHT: (C)2006,JPO&NCIPI
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