粘土复合聚合氯化铝铁处理高藻水中藻类的研究

对粘土复合聚合氯化铝铁（PAFC）用于城市湖泊中藻类的絮凝去除进行了研究。实验结果表明，粘土复合PAFC絮凝藻类的最佳投加量为9mL·L^-1，对叶绿素和浊度的去除率分别可以达到93．75％、90．09％（白粘土）和90．63％、93．18％（硅藻土）。实验还确定了絮凝的最佳工艺及pH范围，最佳pH以小于8为佳：合适的快搅速度是300rpm，快搅时间为2min；慢搅速度为30rpm，慢搅时间为15min。

Flocculation and Removal of Algae in Urban Lakes Water by Chitosan-modified Clays

The flocculation and removal of algae in urban lakes water by PAFC-modified clays was studied. The algal removal efficiency was greatly improved after the modification of the clays. The optimum total loading was 9 mL·L^-1 and the corresponding Chlorophyll-or and turbidity removal rate was 93.75 %, 90.09 %（white clay）and 90.63 %, 93.18 %（diatomite）. The algal removal efficiency was higher when the pH less than 8. The appropriate rapid stirring speed was 300 rpm and stirring time was 2 min. And the appropriate slow stirring speed was 30 rpm and stirring time was 15 min.