Radioactive gas immobilization

The operation of both the dry and wet off-gas treatment systems generates secondary radioactive wastes. These typically include filters and filtrafitm materials, adsorption materials, and in the case of wet scrubbers, liquid scrub solutions and blowdowns. Dry scrubbers would produce secondary wastes in the form of solid neutralizing agents and their residues, probably mixed with fly ash. Some of these secondary wastes (both solid and liquid) may be processed by incineration or drying in the same incineration system. Others need to be handled by a separate volume reduction system or disposed of with or without immobilization. The ash removed from the various collection points in the off-gas treatment system also needs to be treated and disposed of with the bulk of the ash collected from the combustion system. 

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