Demineralized (DM) water, also known as deionized water or distilled water is water that has had its mineral ions removed through a process of water filtration, distillation, or ion exchange. This process removes impurities and minerals such as calcium, magnesium, and iron, which can affect the taste, color, and clarity of the water.
Distillation, Deionization, Membrane filtration (reverse osmosis or Nanofiltration), Electrodeionization (EDI) and other technologies, Demineralisation (DM) water plant is the process of removing mineral salts from water by using the reverse osmosis system with EDI or ion exchange process. With most natural water sources it is possible to use Demineralisation (DM) and produce water of a higher quality than conventional distillation. ডিএম ওয়াটার প্লান্ট
Major Applications of Demineralisation (DM) Water Plant:
Laboratories Water, Boilers feed Water, Textiles Water, Process Water, Pharmaceuticals Water, Chemicals Dilution, Chemical Industries, Breweries, Cooling Towers Potable Water, Hospitals, Automobiles, Battery Water and Fertilizers
Electrodeionization (EDI) water technology is used after reverse osmosis (RO) for polishing of Demineralized (DM) water to obtain low levels of conductivity and silica. The Electrodeionization (EDI) uses ion exchange membranes, ion exchange resins and electricity to produce high-quality water with no regeneration downtime.
Electrodeionization (EDI) is a continuous, chemical free process of removing ionized and ionizable species from feed water using DC power. EDI is typically used to polish reverse osmosis system (RO) permeate, and is a smart alternative to and effective replacement of conventional mixed bed ion exchange.
Demineralization of water is the removal of essentially all inorganic salts by ion exchange. In this process, strong acid cation exchange resin in the hydrogen form converts dissolved salts into their corresponding acids, and strong base anion exchange resin in the hydroxide form removes these acids. Demineralization produces water similar in quality to distillation at a lower cost for most fresh waters.
How to regenerate a DM Water Plant?
Regeneration of Demineralization (DM) plants is essential to maintain their efficiency and effectiveness. The regeneration process for Strong Acid Cation (SAC) and Strong Base Anion (SBA) involves the use of hydrochloric acid and sodium hydroxide solutions, while the Condensate Polishing Unit (CPU) process involves the use of a mixed bed ion exchange resin.
The exhausted cation resin is regenerated by hydrochloric acid (HCl) and the anion resin by sodium hydroxide (NaOH) solution is sometimes called caustic soda. Depending on the water quality, ion exchange resins may get fouled in different ways, resulting in loss of resin efficiency to deliver pure water.
