Demineralization water treatment or de ionization water treatment process is the removal of essentially all inorganic salts by ion exchange. In this water treatment process, strong acid cation resin in the hydrogen form converts dissolved salts into their corresponding acids, and strong base anion resin in the hydroxide form removes these acids. Demineralization water treatment plant produces water similar in quality to distillation at a lower cost for most fresh waters. A demineralizer water treatment system consists of one or more ion exchange resin columns, which include a strong acid cation unit and a strong base anion unit. The cation resin exchanges hydrogen for the raw water cations as shown by the following reactions.
Advantages of De mineralization water treatment are:
Limitations of De mineralization water treatment are: