DM refers to demineralisation. This process involves the removal of various types of salts and minerals which lay suspended in water. Sometimes, water in particular areas contain higher amount of minerals which can cause health hazards. The DM process happens through an ion exchange method.
A DM plant in Kolkata is capable of completely freeing various types of dissolved minerals in methodical ways such as the following:
· Deionization
· Distillation
· Reverse Osmosis
· Electrodyalisis
Deionized water and demineralised water are one and the same. With the help of deionization the mineral ions are effectively eliminated from water. Mineral ions like cations which are mainly found in water include:
· Calcium
· Sodium
· Iron
· Copper
Meanwhile further research has also shown that anions too can be found in water which has not undergone a DM process. These include:
· Chloride
· Sulphate
· Nitrate
What is deionization?
This process is otherwise referred to as a physical method where an ion exchange takes place through specially crafted ion-exchange-resins. The process paves way for an exchange site where replacement of mineral salts takes place in water during which a formation of H+ ions and OH- ions takes place.
Impurities which are majorly found in water supply across West Bengal, Bihar, Assam and Odisha, include different types of dissolved salts. With the help of deionisation it is possible to produce purer water which is distilled water. The process doesn’t take much time with no scale build-up. It is a time tested process which is trusted everywhere across the world.
How a DM plant in Kolkata works
A DM water plant is engineered to especially produce water which does not contain minerals. The principle process involved in demineralisation is ion-exchange. Other processes which are also included in the entire methodology are:
· Degasification
· Polishing
A DM plant has wide range of applications in areas such as:
· Steam
· Power
· Processing
· Cooling
During the process untreated water is passed through a couple of polystyrene bead beds. In this process the cations exchange with the hydrogen ions and the anions exchange with the hydroxyl ions.