Method for recirculating a reprocessing effluent comprising chloride ions

The use of electrodialysis for recirculating a reprocessing effluent comprising chloride ions from an ion exchange resin for transferring chloride ions from a fraction B to a fraction A, the fractions A and B having concentrations of chloride ions of (a) and (b) respectively, with (a)≥(b)>0 g/l, said fractions A and B independently of each other stemming directly or after one or several steps for modifying the chloride ion concentration, of said reprocessing effluent.

A method for recirculating a reprocessing effluent comprising chloride ions from an ion exchange resin comprising the following steps:

• (i) providing a reprocessing effluent comprising chloride ions;
• (ii) selecting fractions A, B and B′ directly from said reprocessing effluent or after one or several steps for modifying the chloride ion concentration, having concentrations of chloride ions (g/l) of respectively (a), (b) and (b′)>0 g/l, with (a)>(b);
• (iv) transferring by electrodialysis the chloride ions of the fraction B to the fraction B′, in order to obtain a fraction B″ having a chloride ion concentration (b″) greater than (b′) and then mixing the fractions B″ and A in order to obtain a fraction C having a chloride ion concentration (c) greater than (a).