Demineralized water, also referred to as Deionized water, is water that had its mineral particles removed. Mineral ions like ionic species of sodium, calcium, iron, and copper, as well as anions such as chlorine, sulfate, nitrate, etc., are common ions found in water.
Demineralization seems to be the process of eliminating mineral salt from seawater by ion exchange. Demineralization may be used with many of these natural water sources to treat water in better quality and at low-cost than standard distillation.
Ion exchange is a quick and reversible process in which contaminant ions in water are exchanged with ions produced by an ion-exchange resin. The contaminant ions are overtaken by the resin that must be renewed regularly to return to its original ionic state.
Two-Bed Ion Exchange:
The two-bed deionizer includes two vessels – one with a cation-exchange resin in the hydrogen (H+) form and the other consisting of an anion resin in the hydroxyl (OH-) form. As water flows through the cation column, all the cations are exchanged for hydrogen ions. For keeping water electrically balanced, one hydrogen ion is exchanged for every monovalent cation and two hydrogen ions are exchanged for every divalent cation. It similarly applies during anion-exchange. The decationised water passes through the anion column. As a result, all the negatively charged ions are exchanged for hydroxide ions and later combine with the hydrogen ions to form Water (H2O).
Mixed-Bed Ion Exchange:
The water quality provided by mixed-bed anion exchange is considerably higher than dual-bed devices. The usage of a variety of ion exchange resins is the most noteworthy feature of the units. The combination is maintained in a selective ion column. The DM water plant’s one-of-a-kind operating technique efficiently handles the issue of salt leakage.
The Features of Demineralized Water Plant:
- Variety of cost-effective standard models.
- User friendly, low maintenance, and easy to install.
- Simpler distribution and collection systems.
- Quick availability
- The multiport valves are top-mounted as well as side-mounted with the necessary high-pressure rating PVC piping.
- Each operating step is marked on the valve, thereby eliminating the chances of error in the operating sequence.
- Single valve assembly, with its simplified frontal Piping, and simpler distribution collecting systems are very easy to install.
- Less power consumption
The Applications of DM Plants:
- Boilers feed Water,
- Swimming pools,
- Potable Water,
- Hospitals, Automobiles, and Battery Fertilizers.
- Ion Exchange Plants