铝盐混凝剂的特性及其在水处理中的应用

The Characteristic and Application of Aluminum Salt in Water Treatment

铝盐应用于给水与污水处理中已有很长时间。60年代,聚铝开始引入水处理,现已得到广泛的应用。铝盐种类由低分子到高分子,从单分子到复合型的发展。现今,污泥处理,铝毒性成为人们日益关注的问题,混凝剂的应用必将沿着解决这个问题的方向发展。

It's a long time since aluminunm salt was adopted in water and waster treatment. From 1960's, polyaluminum was introduced into coagulation, and then it was used widely. The theory of coagulation is developing, polyaluminum chloride and other species polyaluminum were found. Among them polyaluminum silicate adapts to sludge treatment and its residual aluminum is less than that of other aluminum coagulants, so the aluminum poison is reduced, which is demanded in the regulation. New coagulants will adopt in the direction that sludge and residual aluminum produced are less than before and they will perform more prefectly.