The removal of zinc and colourity was nearly 100% w hen initial concentration of Zn 2+ was 5 150 mg/L at the optimum pH val ue 9.0,the amount of modified bentonite added was 1 g/L. The present method is much better than tradit ional method,i.

• 当Zn2 + 离子初始质量浓度为 5 15 0mg/L时 ；最佳pH值为 9.；改性膨润土用量 1g/L时；锌和色度去除率高达 99；