How Does A Demineralisation Plant Remove Impurities From Water?

There are various industrial processes involving the use of demineralised water. Plain water contains various harmful substances such as chlorine and different types of sulphates. It also contains various metal ions. The process of ion-exchange removes such chemicals from water and produces demineralised water. This is why demineralised or deionised water is used in the production of different types of cosmetics and medication. Demineralised water is also used for the preparation of special cleaning solutions for car windows and surface of cars in the automobile industry. The distilled water which you apply to your car’s battery is also prepared from deionisation. The reason is that car batteries are made of lead acid which require distilled water. There are many DM plants in Kolkata and other such cities which process demineralised water through deionisation. Let us have a look at the process of deionisation in a standard DM plant in Kolkata. A two-bed deioniser is used in a DM plant. In Kolkata and states other than West Bengal such as Odisha, Bihar and Assam, Doctor Water is a leading manufacturer and supplier of demineralisation plants. In Doctor Water’s DM plant in Kolkata, the two-bed deionisation method is used. A two-bed deioniser consists of two containers. One of them contains an ion-exchange resin in the form of hydrogen and the second container contains an anion resin in the form of a hydroxyl. Water is released through the cation column and in the process hydrogen ions are exchanged with all of the cations. For every monovalent cation one hydrogen ion is exchanged and for a divalent cation two hydrogen ions are exchanged. When the deionised water passes through the Anion column, all the ions which are negatively charged are exchanged with hydroxide ions. These hydroxide ions combine with hydrogen ions to form deionised water.