反渗透（ReveriseOsmosis）是渗透作用的逆过程，一般指借助外界压力的作用使溶液中的溶剂透过半透膜而阻留某种溶质或某些溶质的过程。近20年利用反渗透进行水处理分离有了很大进展，1975年美国药典第19版首次提出“注射用水系用蒸馏法或反渗透法制取”，从而引起世界关注。对 Reverse osmosis (Osmosis) is the reverse of osmosis, generally refers to the role of external pressure through the solution of the solvent through the semipermeable membrane and the retention of certain solutes or solutes. Nearly 20 years of using reverse osmosis for water treatment separation has made great progress. In 1975, the 19th edition of the United States Pharmacopeia first proposed “water for injection by distillation or reverse osmosis”, which aroused world attention. Correct