Grewa-S is an automatically operated ion exchange water softening unit.
The softener comprises Steel / FRP pressure vessels containing a bed of cation exchange resin, a regenerating system and control valves. A strongly acidic cation exchange resin in sodium form is used to exchange sodium ions for the hardness?forming calcium and magnesium ions to produce soft water.
At the end of each service cycle, the ion exchange resin is regenerated with sodium chloride solution, after which the unit is ready for the next service cycle.
It is recommended to use a carbon filtration system in conjunction with a softener.