Abstract:Two inorganic-organic composite coagulants PFC-PDMDAAC and PAC-PDMDAAC with series of Fe(Al)/PDMDAAC mass ratios were prepared for treatment of summer reservoir raw water from the Yellow River. The influence of Fe(Al)/PDMDAAC mass ratios, dosage, pH and dosing order on coagulation effect (turbidity, organic matter and chlorophyll-a removal) was investigated. The coagulation mechanism of the two coagulants was analyzed by the variation of Zeta potential during coagulation processes. The composite coagulants performed better than using them as dual-coagulants. The coagulation effects of both composite coagulants were greatly impacted by the mass ratio of Fe (Al)/PDMDAAC. The best coagulation effects were obtained when Fe (Al)/PDMDAAC mass ratio was 4:1with the dosage of 4mg/L. The composite coagulants could give excellent coagulation effect in the pH range from 5.0to 8.0, which is much wider than the inorganic coagulants. In comparison of PFC-PDMDAAC, PAC-PDMDAAC gave better turbidity and chlorophyll-a removal and worse organic matter removal.
王萌萌, 高宝玉, 曹百川, 王栋, 张贵州, 魏绍山, 胡欣欣. 无机-有机复合混凝剂处理夏季引黄水库水的对比研究[J]. 中国环境科学, 2012, 32(2): 242-248.
WANG Meng-Meng, GAO Bao-Yu, CAO Bai-Chuan, WANG Dong, ZHANG Gui-Zhou, WEI Shao-Shan, HU Xin-Xin. Comparison of two inorganic-organic composite coagulants in treating reservoir raw water from the Yellow River.. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(2): 242-248.