壳聚糖-沸石复合体对铜绿微囊藻的去除效果  

Removal of Microcystis aeruginosa by chitosan-zeolite composite

作　　者：杜胜蓝[1] 刘文杰 臧常娟 

机构地区：[1]中机国际工程设计研究院有限责任公司,江苏南京210023 [2]江苏省嘉庆水务发展有限公司,江苏南京210002 [3]江苏大地益源环境修复有限公司,江苏南京210002

出　　处：《水资源保护》2013年第4期87-90,94,共5页Water Resources Protection

摘　　要：研究壳聚糖、沸石单独絮凝除藻以及壳聚糖一沸石复合体对铜绿微囊藻去除效果。结果表明：单独使用壳聚糖，质量浓度在0．6～1．1mg／L时，对铜绿微囊藻的去除率超过90％；单独使用沸石，沸石质量浓度小于500mg／L时，对铜绿微囊藻的去除率低于40％。经壳聚糖包覆改性后，壳聚糖一沸石复合体对铜绿微囊藻絮凝去除能力大幅提高。当壳聚糖质量浓度为0．5mg／L，沸石质量浓度为6～14mg／L时，壳聚糖一沸石复合体对铜绿微囊藻的去除率达90％以上。壳聚糖一沸石复合体适用的pH值范围在5～7之间。The removal of Microcystis aeruginosa by chitosan, zeolite, and chitosan-zeolite composite was studied. The results show that with a dosage of 0. 6 to 1.1 rag/L, chitosan can remove more than 90% of Mieroeystis aeruginosa, and with a dosage of less than 500 rag/L, zeolite can remove less than 40% of Microcystis aeruginosa. After the modification of zeolite, the chitosan-zeolite composite greatly improved the algal removal efficiency. The ehitosan-zeolite composite could remove more than 90% of algae when the dosage of ehitosan was 0. 5 mg/L and the dosage of zeolite was between 6 mg/L and 14 mg/L. The optimal pH value ranged from 5 to 7 for the chitosan zeolite composite.

关 键 词：铜绿微囊藻 叶绿素A 铜绿微囊藻密度 壳聚糖 沸石 去除率 

分 类 号：X524[环境科学与工程—环境工程]