Normal tap water contains 50 to 250pmm of dissolved solids. While this is ptable for domestic purposes, it is not suitable for most industrial applications where contamination must be controlled as a low level.
For example, in marine and industrial boilers, it is necessary to use water with low concentration of dissolved solids so t minimize scaling problem.
Chemitreat deionizer is used in the production of deionised water. This deioniser contains a mixture of cationic and anionic ion exchange resins. As tap water enters the deionizer, a process of ion exchange
takes place. Dissolved solids in the tap water are exchanged with the hydrogen and hydroxyl ions from the ion exchange resins, hence forming deionised water.