预氧化强化混凝工艺处理南水北调-水库掺混源水  

Treatment of Source Water from South-to-North Water Diversion Project Mixed with Reservoir Water by Pre-oxidation Enhanced Coagulation Process

作　　者：时真男[1,2] 陈伯俭 唐锋兵 李艳平[3] 碗莹 成瑞雪[1,2] 李思敏 SHI Zhen-nan;CHEN Bo-jian;TANG Feng-bing;LI Yan-ping;WAN Ying;CHENG Rui-xue;LI Si-min(Hebei Technology Innovation Center for Water Pollution Control and Water Ecological Remediation,Hebei University of Engineering,Handan 056038,China;College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;Department of Architectural Engineering,North China Electric Power University Science&Technology College,Baoding 071000,China)

机构地区：[1]河北工程大学河北省水污染控制与水生态修复技术创新中心,河北邯郸056038 [2]河北工程大学能源与环境工程学院,河北邯郸056038 [3]华北电力大学科技学院建筑工程系,河北保定071000

出　　处：《中国给水排水》2020年第9期36-41,共6页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07110-002);河北省重点研发计划项目(18273806D);邯郸市科学技术研究与发展计划项目(1723209055)。

摘　　要：针对邯郸市双水源供水体系,开展了预氧化强化混凝工艺处理南水北调-本地水库掺混源水试验。结果表明,单因素试验得到的PAC、次氯酸钠最佳投加量分别为5~15、0.1~1.0mg/L,慢速反应搅拌速度以60~100 r/min为宜;采用Box-Behnken法对单因素试验参数进行优化,并建立了响应值为叶绿素a和浊度去除率与PAC、次氯酸钠投加量及慢速反应搅拌速度的二次回归模型,通过Design-Expert软件得到的最优工艺参数如下:PAC投加量为11.85 mg/L、次氯酸钠投加量为0.88 mg/L、慢速反应搅拌速度为67 r/min,此时对叶绿素a和浊度去除率的预测值分别为93.27%、90.79%,与实测值93.26%、90.85%高度接近。Based on dual water sources of Handan water supply system,source water from South-to-North Water Diversion Project mixed with local reservoir water was treated by pre-oxidation enhanced coagulation process.The optimum dosage of PAC and sodium hypochlorite were 5-15 mg/L and 0.1-1.0 mg/L respectively,and the opitimum stirring speed of slow reaction was 60-100 r/min.The Box-Behnken method was used to optimize the single factor test parameters of the process,and a secondary regression model with the response value(chlorophyll a and turbidity removal rates)and PAC dosage,sodium hypochlorite dosage and slow reaction stirring speed were established.The optimal process parameters obtained by Design-Expert software were as follows:PAC dosage of 11.85 mg/L,sodium hypochlorite dosage of 0.88 mg/L and slow reaction stirring speed of 67 r/min.Under the optimal condition,the predicted removal rates of chlorophyll a and turbidity were 93.27%and 90.79%,respectively,which were close to the measured values of 93.26%and 90.85%.

关 键 词：预氧化 混凝 南水北调源水 响应面分析 叶绿素A 浊度 

分 类 号：TU991[建筑科学—市政工程]