Adopt RO system to desalt, desalination rate reaches 98%~99.8%, reclaim rate reaches 50%~75%, output water quality sweet and favorable. Remove poisonous and harmful substances in source water, and after treatment, many poisonous indexes, such us CH4Cl3, CCl4, benzene , pesticide, hydroxybenzene, and Pb, Hg, B, Cd, Ur and other radio active element content are all under inspection limit.