The Mechanism of Cyanobacterium (M.aeruginosa) Microcystins Releasing by Chemical Ozidation in Drinking Water Treatment
TEM investigation was performed to analyze the characteristics of the cell breakage of cyanobacterium(M.aeruginosa)after being oxidized by Cl2, ClO2 and O3 respectively, and the mechanism of intracellular microcystins releasing and the removal effectiveness by different chemical oxidants was further discussed. The results show that all the three oxidants can cause decomposing of cyanobacterum cells and even cause intracellular microcystins releasing, while O3 has the most serious effect. Under the low dosage (0.5 mg/L) of oxidants, the quantity of the release of intracellular microcystins caused by ClO2 is most remarkable, and the intracellular microcystins removal by O3 proves better than that by Cl2 and ClO2. Considering the safety factor of the intracellular microcystins removal, O3 should be given the priority when choosing chemical oxidant while Cl2 is not recommended to remove cyanobacteriaum microcystins in the drinking water treatment.
chemical ozidation M.aeruginosa release characteristics of microcystins
Cui-rong HOU Wenrong HU JIA Rui-bao LIU Pei-qi
School of Environmental Science and Engineering Shandong University Jinan, China Jinan Water and Waste Water Monitoring Center Jinan, China Jinan Environmental Protection Bureau Jinan, China
国际会议
上海
英文
3428-3431
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）