The calcium carbonate in running water, day after day, drop by drop, stratifies creating small white grains, the so-called limestone.
Calcareous water is the main cause of problems in domestic installations due to the formation of encrustations. Boilers, washing machines, taps are often affected, but also linen, hair and our skin.
The ion exchange softening plants exploit the specific action of the resins that selectively remove calcium and magnesium from the water by replacing them with sodium, so that, when heating, no more precipitation of calcareous origin is generated.
The exchange resins are regenerated automatically through a concentrated saline solution (brine): from the passage of the brine, consisting of sodium chloride, i.e. chloride (Cl–) and sodium (Na +) ions, the resins are recharged with the sodium exchanged and become operational again. The entire regeneration phase takes place automatically, the only precaution required is to periodically add the salt into the appropriate container.
The system must be coupled to a mechanical safety filter that prevents the entry of solid particles into the systems, thus protecting against corrosion and allowing correct operation of the plant.