Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste
Patent
1994-07-08
1995-10-10
Mai, Ngoclan
Hazardous or toxic waste destruction or containment
Destruction or containment of radioactive waste
134 6, 134 7, 134 12, 134 13, 976DIG376, G21F 900
Patent
active
054572614
ABSTRACT:
A method and system for removing a surface layer contaminated with radioactive and/or hazardous material and subsequently treating the waste to remove contaminants and provide an essentially contaminant-free final effluent. The contaminated material is removed by blasting the surface with a pressurized stream of air and sodium bicarbonate abrasive media, and the media is dissolved in water subsequent to the blasing operation. The resulting waste is treated in a sequence of steps including adjustment of pH, aeration and separation into primarily solid and liquid phases by precipitation of solids, which are removed for appropriate disposal. The primarily liquid phase is successively passed through a particle filter, a granulated activated carbon filter and a polishing unit to produce the clean final effluent.
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Brown Terry L.
Geiss Anthony J.
Grieco Scott
Neubauer Eric D.
Rhea James R.
Mai Ngoclan
McGuire Charles S.
O'Brien & Gere Technical Svcs., Inc.
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