Water Softener Demineralization

Water Softener & Demineralization Our softener & Demineralization techniques are known for effective and efficient treatment of water. For softener, hard water is passed through the resin and the calcium and magnesium ions are removed by the resin and equal number of sodium ions is imparted to the water. The resin has finite capacity for removal of calcium and magnesium ions and after this capacity is exhausted, the resin will have to be regenerated to bring it back in sodium form. The resin is regenerated using 10-15% sodium chloride solution. Excessive salt and regeneration products are washed away by giving a slow rinse (flow rate = brine injection flow rate) followed by a fast rinse (flow rate= service flow rate)ReactionsDuring service cycleR - Na + Ca+ = R Ca + Na+R - Na + Mg++ = R Mg + Na+During regenerationR- Ca + NaCl = R Na + CaCl2R - Mg + Nacl = R Na + MgCl2For demineralization, a demineralizer is used when dissolved solids are to be removed more effectively. A demineralizer consists of cation (Calcium, Manganese, Sodium) exchanger and anion (chlorides, sulphates, bicarbonates) exchanger. When filtered water is passed through resin, cations are retained by resin and an equal number of hydrogen ions are given to water. Anions are replaced by hydroxyl ions. Hydrochloric/Sulphuric acid and Sodium hydroxide is used to regenerate cations and anions respectively. Degasser unit is used to reduce the load on anion exchanger. Partial demineralization is also provided.