Waste treatment evaluation for aqueous secondary waste from mixed waste incineration

Conference · Fri May 01 04:00:00 EDT 1992

OSTI ID:10146792

Burns, H. H.

The Consolidated Incineration Facility (CIF) is a rotary kiln incinerator that processes low-level radioactive, hazardous, and mixed wastes generated at the Savannah River Site (SRS). The incinerator offgases are cleaned by a wet offgas system that generates a secondary aqueous waste stream (blowdown). This waste is mixed waste that requires treatment prior to disposal. The blowdown contains approximately 80 wt% water and 20 wt% chloride salts, ash, and radioactive and hazardous contaminants. A study was conducted to evaluate the various technologies that are commercially used or being developed to treat secondary liquid waste. Both wastewater treatment and evaporation were considered in the evaluation as potential de-watering technologies to reduce the volume of waste, and therefore, reduce disposal costs. The residue from the de-watering process must be stabilized in a binding agent before disposal as mixed waste. There is no precedent to follow for stabilization of mixed wastes. Radioactive wastes have been stabilized with cement for years. However, the Nuclear Regulatory Commission (NRC) has concern over the longevity of cement, while Land Disposal Restrictions (LDR) requirements have been implemented giving rise to concern for leaching of hazardous constituents from cement. The various binders that were considered include glass, cement, bitumen, sulphur cement, polyethylene, epoxy, and vinyl ester resin.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10146792
• Report Number(s): WSRC-MS--92-143; CONF-920527--4; ON: DE92013986
• Country of Publication: United States
• Language: English

Related Subjects

052001
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
AQUEOUS SOLUTIONS
COMBUSTION
COMPARATIVE EVALUATIONS
EVAPORATION
HAZARDOUS MATERIALS
HEALTH AND SAFETY
OFF-GAS SYSTEMS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
REGULATIONS
SAVANNAH RIVER PLANT
SOLIDIFICATION
STABILIZATION
THERMOPLASTICS
WASTE FORMS
WASTE PROCESSING
WASTE WATER