For removal of water alkalinity (amount of bicarbonates) is used special selective technology of dealkalisation, which is widely applied for treatment of water for heating and cooling systems, boilers, beer production and etc.
Water alkalinity is reduced by weak-acid cation resin. This resin has a property to attract cations contained in water and to replace them by hydrogen ions until a balance is obtained with the cations tied to the bicarbonates. The CO2 liberated by this process is then eliminated in to the atmosphere and the other part of Mg2+, Ca2+ and Na+ salts (sulphates, chlorides) remains in the water. Thus is reduced both the water alkalinity and a total amount of salts too.
