Converting Simulated Sodium-bearing Waste into a Single Solid Waste Form by Evaporation: Laboratory- and Pilot-Scale Test Results on Recycling Evaporator Overheads

Griffith, D. ; Griffith, D. L. ; Kirkham, R. J. ; Olson, L. G. ; Losinski, S. J.

Idaho Completion Project (ICP)

关键词: Evaporators;    Flowsheets;    Remote-Handled Transuranic Waste;    Waste Forms;    Evaporation;   

DOI  :  10.2172/910630
RP-ID  :  ICP/EXT-04-00172
RP-ID  :  DE-AC07-99ID-13727
RP-ID  :  910630

美国|英语

来源: UNT Digital Library

【 摘 要 】

Conversion of Idaho National Engineering and Environmental Laboratory radioactive sodium-bearing waste into a single solid waste form by evaporation was demonstrated in both flask-scale and pilot-scale agitated thin film evaporator tests. A sodium-bearing waste simulant was adjusted to represent an evaporator feed in which the acid from the distillate is concentrated, neutralized, and recycled back through the evaporator. The advantage to this flowsheet is that a single remote-handled transuranic waste form is produced in the evaporator bottoms without the generation of any low-level mixed secondary waste. However, use of a recycle flowsheet in sodium-bearing waste evaporation results in a 50% increase in remote-handled transuranic volume in comparison to a non-recycle flowsheet.