Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste – Treating radioactive liquid
Patent
1995-05-22
1996-10-08
Mai, Ngoclan
Hazardous or toxic waste destruction or containment
Destruction or containment of radioactive waste
Treating radioactive liquid
210711, 210758, 210759, 210760, 976DIG380, G21F 900
Patent
active
055641059
ABSTRACT:
A borated aqueous solution from a nuclear reactor coolant system dilute chemical-decontamination process or from an equipment washing process which has been contaminated with radioactive metals or heavy metals including cobalt, nickel, chromium, iron, manganese, lead or mercury and with a chelating agent, detergent or soap is treated with an oxidizing agent to oxidize the chelating agent, detergent or soap and to precipitate the contaminant metals. The contaminant metals are then separated from the solution by centrifugal filtration, micromembrane belt filtration or magnetic separation. Advantageously, a very small volume of precipitate may then be buried and the decontaminated solution may be recycled or further treated and released for other uses.
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M. E. Pick and M. G. Segal, "Chemical decontamination of water reactors. CEGB developments and the international scene", Nucl. Energy, vol. 22, No. 6 (Dec. 1983), pp. 433-444.
Alvino William M.
Burack Robert D.
Byers William A.
Grant David C.
Lahoda Edward J.
Mai Ngoclan
Westinghouse Electric Corporation
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