Water Softening Plant

Water softening plant is the most widely employed method for softening water during the softening processes calcium and magnesium ions are remove from hard water by cation exchange for sodium ions when the exchange resin has essentially remove the calcium magnesium ions to the limit of its capacity the resin is regenerated to the sodium from with a salt solution in the ph range of 6 to 8 the exchange capacity of polystyrene resins is 650 kg/m3 when regenerated with 250 g of salt per kilogram of hardness removed during the regeneration process the resins are again converted to sodium from for the next cycle of operation.