THE YATHRIB SYSTEM

Till now desalination processes are all physical methods in which wate r is taken out, leaving behind the scales of unchanged soluble salts i ntact. The presence of only about 3-5 % of dissolved salts constitutes hardness in seawater. The Yathrib system is a recent electrochemical separation method to chemically remove dissolved salts from seawater. Seawater --> conditions of seawater, a physical method by electrolyzer --> produces NaOCl and others --> First chemical treatment by NH4OH - -> H2O + ppt + gas up + carry over HOCl --> ppt separated --> H2O + ca rry over elements (HOCl and others). Second chemical treatment by HCI --> H2O + gases --> After filtration through resin column --> pure wat er is taken out.