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Abstract

The separate treatment of the solvent wash alkaline waste (ASWW) from the other low and medium level liquid wastes generated during reprocessing operations has been investigated through the development of three alternative processes dealing with solvent extraction, chemical precipitation combined with ultrafiltration and inorganic ion exchange. On the basis of laboratory-scale experiments performed on the same genuine ASWW sample, a comparison has been made between the respective performances of each of these processes in terms of selectivity, decontamination and volume reduction factors. From this assessment, it evolved that solvent extraction and chemical precipitation combined with ultrafiltration processes are good competitors for implementing such kind of treatment although for the alpha DF, solvent extraction appears more flexible. To be really attractive, inorganic ion exchange should exhibit better VRF and DF possibly by pretreating the ASWW.

Additional information

Authors: CECILLE L CEC BRUXELLES (BELGIUM) CUMMING I W ATOMIC ENERGY RESEARCH ESTABLISHMENT, HARWELL (UK) DOZOL J F CEA, CADARACHE (FRANCE) GASPARINI G ENEA, CASACCIA (ITALY) , CEC BRUXELLES (BELGIUM);ATOMIC ENERGY RESEARCH ESTABLISHMENT, HARWELL (UK);CEA, CADARACHE (FRANCE);ENEA, CASACCIA (ITALY)
Bibliographic Reference: INTERNATIONAL TOPICAL MEETING ON WASTE MANAGEMENT, NIAGARA FALLS, N.Y. (USA), SEPT. 14-18, 1986 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32864 ORA
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