Process
- During service period polystyrene base resins in sodium form adsorb calcium, magnesium in raw water and after producing certain amount of soft water these are exhausted.
- These then require regeneration with 5 to 10% common salt solution
- In case of big units, saturated salt solution is prepared in a r. C. C. Tank and required amount of brine is drawn in a brine measuring tank
- The brine soln. Is then diluted with the help of an injector and fed into the softener. In case of medium size softener salt solution is prepared in a salt pot and instantly fed into the softener
- In case of small size softener, salt is dumped inside the shell. Excess brine is then drained during the period of rinsing with filtered water
- Soft water is then tested with the help of a hardness test kit and fed into different processes
- A water meter is incorporated on the line for measuring total amount of soft water treated by the softening unit.