Process for removing alkalinity and hardness from waters

摘要: Raw water is fed to a first column containing weak acid cation exchange resin in hydrogen form where alkalinity causing ions and hardness the extent of are converted carbonic acid. The acid, which hydrolyzes dissolved carbon dioxide, stripped from decarbonation unit by passing air countercurrent flow through unit. then second sodium removes residual along with neutralization any mineral acids or dioxide. Both resins substantially completely regenerated upon exhaustion provide process maximum capacities utilized, carried out minimum monitoring control.