Process for treatment of detergent-containing radioactive liquid wastes

Patent · Tue Feb 21 04:00:00 EST 1984

OSTI ID:7036355

Kamiya, K; Chino, K; Funabashi, K; Horiuchi, S; Motojima, K

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.

• Assignee: Hitachi, Ltd. (Japan)
• Patent Number(s): US 4432894
• OSTI ID: 7036355
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ADDITIVES
DETERGENTS
EMULSIFIERS
EVAPORATION
EVAPORATORS
FABRICATION
MANAGEMENT
MATERIALS
MOLDING
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PELLETIZING
PELLETS
PHASE TRANSFORMATIONS
POWDERS
POWER PLANTS
PROCESSING
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTE STORAGE
RADIOACTIVE WASTES
STORAGE
SURFACTANTS
THERMAL POWER PLANTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE STORAGE
WASTES
WETTING AGENTS