The invention provides a method for recycling the waste regenerant from
softeners. The method includes passing a high concentration of monovalent
ionic halide salt through a resin bed. The high monovalent cation
concentration causes the divalent cations on the resin to be exchanged
with the monovalent cations by osmotic forces. The regenerant is then
treated to precipitate the divalent cations and replace them with
monovalent cations.
