Compositions – Radioactive compositions – Nuclear reactor fuel
Patent
1981-03-30
1984-02-21
Cintins, Ivars C.
Compositions
Radioactive compositions
Nuclear reactor fuel
210662, 210739, 210751, 252628, 252631, G21F 908, G21F 912
Patent
active
044328940
ABSTRACT:
A detergent-containing radioactive liquid waste originating from atomic power plants is concentrated to have about 10 wt. % detergent concentration, then dried in a thin film evaporator, and converted into powder. Powdered activated carbon is added to the radioactive waste in advance to prevent the liquid waste from foaming in the evaporator by the action of surface active agents contained in the detergent. The activated carbon is added in accordance with the COD concentration of the radioactive liquid waste to be treated, and usually at a concentration 2-4 times as large as the COD concentration of the liquid waste to be treated. A powdery product having a moisture content of not more than 15 wt. % is obtained from the evaporator, and pelletized and then packed into drums to be stored for a predetermined period.
REFERENCES:
patent: 3196106 (1965-07-01), Haden et al.
patent: 3243380 (1966-03-01), Conn
patent: 3896045 (1975-07-01), Peeters et al.
patent: 4033868 (1977-07-01), Meichsner et al.
patent: 4203863 (1980-05-01), Knotik et al.
Chino Koichi
Funabashi Kiyomi
Horiuchi Susumu
Kamiya Kunio
Motojima Kenji
Beall Mary Louise
Cintins Ivars C.
Hitachi , Ltd.
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