PAFS-PDMDAAC复合絮凝剂的除磷效果研究  

Study on Phosphorus Removal by PAFS-PDMDAAC Composite Flocculant

作　　者：郑怀礼[1] 王白雪[1] 熊文强[2] 彭德军[1] 龙腾锐[3] 刘宏[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044 [2]重庆大学资源与环境学院,重庆400044 [3]重庆大学三峡库区生态环境教育部重点实验室

出　　处：《中国给水排水》2006年第19期50-52,共3页China Water & Wastewater

基　　金：国家自然科学基金资助项目(20577072);重庆市自然科学基金资助重点项目(2006BA7029)

摘　　要：针对生物除磷稳定性差、效果欠佳的问题，研发了PAFS—PDMDAAC复合絮凝剂，考察了复合絮凝剂中PDMDAAC的复合比、污水pH值及复合絮凝剂投量对除磷效果的影响。结果表明，将絮凝剂配成质量分数为10％的液体，在PDMDAAC复合比为5％、液体复合絮凝剂投量为1．6～2．4mL／L、污水pH值为7～13的优化条件下，对模拟废水中磷的去除率〉97％，除浊率〉99．40％。同时考察了在优化试验条件下复合絮凝剂对实际污水的除磷效果，结果表明，除磷率达98．42％，除浊率为98．53％，出水中磷浓度可达到国家一级排放标准。Regarding to the instability and faulty effect of phosphorus removal by microorganism treatment, the PAFS-PDMDAAC composite flocculant was developed. The PDMDAAC ratio, the value of pH and the dosage of PAFS-PDMDAAC were investigated. The results show that when the mass fraction of PAFS-PDMDAAC is 10%, the optimal conditions are： PDMDAAC is 5%, the dosage of PAFS-PDM- DAAC is 1.6 - 2.4 mL/L, and pH is 7 - 13. Under these optimal conditions, the phosphorus removal rate is above 97% and the turbidity removal rate is above 99.40% in simulated wastewater. When PAFS-PDMDAAC is used to treat the domestic wastewater in Chongqing, the phosphorus removal rate is 98.42% and the turbidity removal rate is 98.53%. The phosphorus of the effluent attains the national first class standard.

关 键 词：复合絮凝剂 聚合硫酸铝铁 聚二甲基二烯丙基氯化铵 除磷 除浊 

分 类 号：X703.5[环境科学与工程—环境工程]