THE USE OF INORGANIC ION EXCHANGERS IN THE DECONTAMINATION OF LOW AND MEDIUM ACTIVITY RADIOACTIVE WASTE
This study proposes an alternative pretreatment or treatment for low and medium activity liquid wastes, allowing to improve the quality of containment and decrease the cost of storage. To obtain this objective inorganic ion exchangers are used to remove alpha emitters and long lived fission products and concentrate them in a small volume; these exchangers can be converted into a stable matrix by thermal treatment. This treatment, at least for some liquid wastes, does not exclude a complementary decontamination by chemical precipitation. In this case sludges, arising from precipitation, exempt from alpha emitters and long lived fission products can be stored in a shallow land burial. This study includes two parts: + Measurements of distribution coefficients for the main nuclides in order to choose, for each liquid wastes, the most suitable ion exchanger. + Estimation of performances of selected inorganic ion exchangers, from tests of percolation of genuine effluents.
Bibliographic Reference: EUR 10675 FR (1986) MF, 185 P., BFR 300, BLOW-UP COPY BFR 925, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989125037900 / Last updated on: 1987-04-01
Available languages: fr