高效羟基铁盐净水剂的制备自1974年日本首先取得专利后,欧美等国皆相继开发应用了相似的产品。在我国于上世纪80年代初期由北京、天津、上海等有关部门也先后研制成功及投产。由于该剂具有一系列优异特性:pH适用幅度宽、矾絮体和净化当量大、不含氯等有害物质、加之生产成本低 Preparation of highly efficient hydroxy iron salt water purification agent Since Japan first got the patent in 1974, Europe and the United States and other countries have all developed and applied similar products one after another. In our country in the early 1980s by Beijing, Tianjin, Shanghai and other relevant departments have also successfully developed and put into operation. As the agent has a series of excellent features: wide range of pH, alumina flocs and purification equivalent, non-chlorine and other harmful substances, combined with low production costs