PAC复合海泡石絮凝对去除水体中藻类及对残余铝形态分布的影响

Effect of PAC Compounded with Sepioliteon on Coagulation Removal of Algae in Water and the Form of Residual Aluminum

在确定助凝剂海泡石种类和聚合氯化铝(PAC)絮凝剂最佳投加量前提下,考察了海泡石A3粒径对除藻效果及处理后水体中残留铝形态的影响。结果表明:海泡石A3粒径为0.098 mm,投加量为30 mg.L-1时,加入16 mg.L-1PAC混凝处理效果最佳,浊度和叶绿素a的去除率分别为98.26%和96.67%,TOC(总有机碳)的浓度为8.89 mg.L-1。残余总铝量和对人体危害最大的溶解性铝分别为0.075 mg.L-1和0.017 mg.L-1。

The research is based on the coagulation removal of algae by polymeric aluminum chloride（PAC） compounded with different sizes of sepiolite A3,and the form of residual aluminum was studied.The result showed that the maximum granular size of sepiolite A3 is 0.098 mm,and the quality is 30 mg.L^-1PAC is 16 mg.L^-1Under the optimal experimental conditions,the removal rate of turbidity and chlorophyll a were 98.26% and 96.67%,concentration of TOC was 8.89 mg.L^-1Residual total aluminium and dissolved aluminium which is the most harmful to people were 0.075 mg.L^-1and 0.017 mg.L^-1