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Complete pre-engineered packaged DM units and tailor made DM units are based on client process requirements. MOC can be FRP / MS Epoxy painted/ MS Rubber lined (Food Grade) with Manual / Semi Auto/ Complete PLC / SCADA operated are based on CAPEX and Client requirements. We provide complete solution including Bulk storage tanks and storage tanks, transfer pumps.
Demineralised Water (also known as Deionised Water) has its mineral ions removed. Mineral ions such as cations of Sodium, Calcium, Iron, Copper, etc. and anions of Chloride, Sulphate, Nitrate, etc. are common ions present in water. Deionization is a physical process which uses specially manufactured ion exchange resins which provides ion exchange site for the replacement of the mineral salts in water with water forming H+ and OH- ions. Because the majority of water impurities are dissolved salts, deionization produces a high purity water that is generally similar to distilled water, and this process is quick and without scale build-up. Demineralised water systems are the main equipment used in the preparation process of high purity water and treatment water. It consists of following:
1. Ion Exchange Resin
There are two basic types of resins: Cation Exchange and Anion Exchange resins. Cation exchange resins will release Hydrogen (H+) ions or other positively charged ions in exchange for impure cation present in the water. Anion exchange resins will release hydroxyl (OH-) ions or other negatively charged ions in exchange for impure anions present in the water.
2. Degasser Systems:
Comprises of Tower, Tank, Blowers & Pumps. Degasser Tower is filled with PP ranching rings. Air is forced from the bottom of the tower by Centrifugal Blowers, while the water flows down through the packed bed of PP rings. The carbonic acid present in the water splits up into Carbon dioxide gas and Water. This Carbon dioxide gas is stripped off and escapes from the top of the tower. The water free from carbonic acid is collected in the Degassed Water tank and is pumped to down-stream units for usage.
3. Mixed Bed
In mixed-bed deionizers the cation-exchange and anion-exchange resins are commonly mixed in a single pressure vessel. The thorough mixture of cation-exchangers and anion-exchangers in a single column makes a mixed-bed deionizer equivalent to a lengthy series of two-bed plants. The modular construction permits flexibility in the selection of cation and anion units to cater to different types of raw water. The applications have it uses in food and beverages, pharmaceuticals and paper and pulp industry. As a result, the water quality obtained from a mixed-bed deionizer is appreciably higher than that produced by a two-bed plant. Mixed-bed deionizers are normally used to ‘polish' the water to higher levels of purity after it has been initially treated by either a two-bed deionizer or a reverse osmosis RO unit.
