Abstract:The effects of the pH of chitosan-modified flocculant and the pH of Microcystis aeruginosa culture on the algae-removingl efficiency were studied in the present work. The results indicate that: 1)The final pH after flocculation was the key factor affecting the flocculation efficiency for both indoor cultured M. aeruginosa and field M. aeruginosa blooms, the final pH should be adjusted to 7.0~7.3 to obtain the best flocculantion effect; 2) clay density should be increased for the efficient sedimentation of high-buoyancy cyanobacterial blooms. These results suggest that the composition of chitosan-modified flocculant must be changed according to the pH of water-body and the algal biomass to obtain the best algae-removing efficiency, and the flocculation process should be carried out when the pH of water-body is low and the algal biomass is small.
向斯, 刘世昌, 赵以军, 程凯. pH值及黏土密度对壳聚糖改性絮凝剂除藻效果的影响[J]. 中国环境科学, 2015, 35(5): 1520-1525.
XIANG Si, LIU Shi-Chang, ZHAO Yi-Jun, CHENG Kai. Effect of pH and clay density on the algae-removing efficiency using chitosan-modified flocculant. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(5): 1520-1525.