响应面法优化聚合硫酸铁铝的制备及应用  

Optimization of Preparation and Application of Polymeric Aluminum Ferric Sulfate Coagulant by Response Surface Analysis

作　　者：蒋贞贞[1] 郑怀礼[1] 谭铭卓 朱俊任[1] 关庆庆[1] 冯力[1] 陈伟[1] 

机构地区：[1]重庆大学教育部三峡库区生态环境重点实验室,重庆400045 [2]江门市慧信净水材料有限公司,广东江门529000

出　　处：《土木建筑与环境工程》2013年第3期106-114,共9页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金(51078366);国家重大科技专项水体污染控制与治理(2009ZX07315-002);重庆市工业发展资金(产研专项)项目(10-cxy-09)

摘　　要：以七水硫酸亚铁和硫酸铝(工业级)为原料,用直接氧化法制备新的水处理剂———聚合硫酸铁铝(polymeric aluminum ferric sulfate,PAFS),在单因素的基础上,根据Box-Behnken试验设计原理,运用响应面分析和优化适应混凝处理生活污水的PAFS的制备工艺。探讨了反应温度、时间、SO42-/Fe、NO3-/Fe、Al/Fe、PO43-/Fe、OH/Fe摩尔比对生活污水TP去除率的影响。结果表明:PAFS的最佳制备工艺条件为反应温度、时间和SO42-/Fe、NO3-/Fe、Al/Fe、PO43-/Fe、OH/Fe摩尔比分别为84℃、48min、0.38、0.47、0.11、0.14、0.03。在此条件下制备的PAFS对生活污水TP去除率为98.67%,与模型预测值拟合性良好,偏差为0.38%。同时,生活污水的COD去除率达到79.13%,浊度去除率达到98.12%。A new composite coagulant polymeric aluminum ferric sulfate （PAFS） was synthesized using FeSO4 ~ 7H20 and A12 （SO4）3 （industrial） by the direct oxidation method. The optimization of preparation process of PAFS was investigated using single factor and response surface methodology based on Box- Behnken central design. Parameters affecting the coagulant performance, such as reaction temperature, time, SO42-/Fe, NO3 /Fe, A1/Fe, PO43-/Fe, and OH/Fe molar ratios were examined. The results show that when temperature, time, SO42-/Fe, NO3 /Fe, A1/Fe, PO43/Fe, and OH/Fe molar ratios were 84~C, 48 rain, 0.38, 0.47, 0. 11, 0. 14, 0.03, respectively, it is the optimum conditions for synthesis. In this condition TP removal was 98.67%, and the experimental results were in good agreement with the predicted values of the model equation with 0. 38% deviation. Furthermore, COD （chemical oxygen demand） and turbidity removal efficiency were 79.13% and 98.12%, respectively.

关 键 词：水处理剂 混凝处理 响应面分析 聚合硫酸铁铝 TP去除率 

分 类 号：TQ316[化学工程—高聚物工业] X703[环境科学与工程—环境工程]