Demineralization of water is a type of water purification which involves the process of removing mineral salts from water by use of Ion Exchange (IX) process. The water which is demineralized is made free from dissolved salts & minerals and consists of processes such as Distillation, Deionization, Membrane Filtration, and various other processes. The terms deionization and demineralization are often used interchangeably.

Water consists of mineral ions such as anions like nitrate, sulfate, chloride, etc. and cations like sodium, copper, calcium, iron, etc. De-mineralization is a physical process involving the use of specially-manufactured ion exchange resins. They provide an ion exchange site for mineral salt replacement in water.

Demineralization or deionization is a quick and produces high purity water similar to distilled water at a lower cost without any high scale buildup. Demineralized Water System has a wide range of applications in the field of power, cooling, process, and steam.