Strong acid cation exchanger is a vessel in which an ion exchange process takes place. The cations (calcium, magnesium and sodium ,chloride, sulphates ,carbonate and bicarbonate salts) present in the water gets converted into their equivalent acid in this unit. Strong acid cation resin will replace all the cations in raw water with hydrogen ions, thus reducing the dissolved solids in raw water

When the cation exchanger gets exhausted, it is regenerated with acid to restore hydrogen ions. It is suitable for both manual and automatic operation. They are available as both co-flow and counter current regeneration units.