The main function of the demineralization process
Lies in the removal of dissolved solids contained in water.
Dissolved solids are small particles that are completely surrounded by water molecules and have a certain electric charge. If the charge is negative they are called anions, whereas if the charge is positive they are called cations. Without the presence of water they form compounds called salts.
The feed water must be within the relevant ratios of conductivity and silicon dioxide (SiO2). To ensure that these ratios are within the ratios, the demineralization process must be carried out in two stages: The choice of one process or another will be conditioned by the physical-chemical characteristics of the feed water, the necessary production and the available energy source to drive The demineralization plant.
Where the bulk of the dissolved salts are removed by means of exchangers with strong cation and strong anion type resins, an evaporation system or a reverse osmosis system.
Where the final polishing is performed to achieve these ratios. This second stage will always consist of cation and strong anion type resin exchangers, forming two separate beds or a mixed bed.