FIELD: water treatment.
SUBSTANCE: invention is dealing with separation of cationite/anionite mixture utilized in multifunctional filters in deep water treating systems to be further regenerated. Method is based on difference in densities of the two ionites and employs composition constituted by fluorine-containing saturated acyclic hydrocarbon or fluorine-containing ether, which have densities within a range of 1.30-1.90 kg/dm3, and saturated acyclic hydrocarbon of general formula CnH2n+2 (n=6-9) having density between 0.65 and 0.8 kg/dm3.
EFFECT: preserved ion-exchange capacity of resins before regeneration.
2 ex
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