VOLUME REDUCTION OF RADIOACTIVE SLUDGES BY FREEZING AND THAWING TREATMENT (in Japanese)
A small plant was constructed that adopts the freezing treatment for concentrating radioactive sludges. The volume reduction characteristic of the plant was investigated. The plant can handle 125 1 of sludge per day and can reduce the final volume of the concentrated sludge to about 1/5000, 1/2000 and 1/ 4000 of the volume of the original waste water to be decontaminated, for bentonite-Konan Floc, calcium phosphate, and ferric hydroxide sludges, respectively, in the case that the separation by settling is applied as the treatment after thawing. Appreciably higher volume reduction ratio can be obtained when the vacuum filtration is applied after thawing. In the beaker- experiments that were carried out, it was found that the addition of some polymer as agent is effective in improving the volume reduction or in shortening the settling time after thawing. This was applied for the large scale treatment by the plant and good results were obtained. (P.C.H.)
- Research Organization:
- Osaka Radiation Center
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-006544
- OSTI ID:
- 4128537
- Journal Information:
- Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 5; ISSN NGEGA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Japanese
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