壳聚糖去除铜绿微囊藻的工艺研究及机理探讨  

Study on Removal of Microcyctis Aeruginosa by Chitosan Compounding Sepiolite

作　　者：刘振儒[1] 赵纪强[1] 

机构地区：[1]青岛科技大学材料与环境科学学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2005年第5期394-397,405,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：青岛市科技发展计划项目资助课题(02-1-KJ-shn-22)

摘　　要：对壳聚糖复配海泡石絮凝去除铜绿微囊藻(Microcyctis aeruginosa)进行了研究.结果表明,在壳聚糖用量0.56 mg·L-1、海泡石用量32 mg·L-1的情况下,藻个数由1.944×106cell·mL-1降为1.38×103cell·mL;浊度由65 NTU降到0.1 NTU,去除率达99.6%;实验还确定了絮凝的最佳工艺及pH值范围,最佳pH值在4～8之间;快搅对天然高分子絮凝剂壳聚糖的絮凝效果影响较大,合适的快搅速度是400 r·min-1,快搅时间3～8 min;慢搅相对来说影响较小,一般在100～140 r·min-1之间,搅拌时间6min为宜;加药时间间隔8～10 min.Chitosan compounding sepiolite was used to remove Microcyctis aeruginosa. The results showed that when the dosages of chitosan and sepiolite were 0.56 mg·L^-1 and 32 mg·L^-1 respectively, the number of algae decreased from 1. 944 × 10^6 cell ·mL^-1 to 1.38 × 10^3 cell·mL^-1, turbidity decreased from 65 NTU to 0.1 NTU and the removal rate was 99.6%. The optimal pH was in 4-8. Rapid stirring could affect the coagulation effect greatly, and the appropriate rapid stirring speed was 400 r · min ^-1 and stirring time was 3-8 min. Slow stirring affected less than rapid stirring, the optimal slow stirring speed was 100-140 r · min^-1 and stirring time was 6 min. The feasible interval time of adding drug was 8-10 min.

关 键 词：铜绿微囊藻 壳聚糖 海泡石 混凝 

分 类 号：X131.2[环境科学与工程—环境科学]