赣南某微污染水源水强化混凝处理的水力条件优化试验  

THE HYDRAULIC CONDITION OPTIMIZATION EXPERIMENT FOR ENHANCED COAGULATION OF MICRO-POLLUTED SOURCE WATER IN GANNAN

作　　者：严群[1] 周娜娜[1] 徐晶[1] 

机构地区：[1]江西理工大学,江西赣州341000

出　　处：《水处理技术》2013年第12期108-111,共4页Technology of Water Treatment

基　　金：江西省科技厅自然科学基金资助项目(20122BAB203027)

摘　　要：对赣南某微污染水源水进行强化混凝处理的水力条件优化试验。考察了混合搅拌时间、强度,絮凝搅拌时间、强度4个影响因素对混凝处理效果影响,并确定最佳操作参数。结果表明,先以260 r/min混合搅拌2 min,再以80 r/min絮凝搅拌25 min时,去除效果最好,沉淀后的水浊度为0.88 NTU,浊度去除率为98.63%,COD Mn的去除率为49.83%。对水力条件进行动力学研究和分析,表明分子间存在速度梯度G值。Hydraulic condition optimization experiment was performed by using enhanced coagulation to treat one micro-polluted source water of Gannan. The effects of mixed stirring time, intensity, flocculation stirring time and strength on the coagulation treatment effect were investigated. The results show that the optimum turbidity removal was 98.63% （0.88 NTU） and CODMn removal Was 49.83% when coagulation stirring strength for 260 r/min, mixed stirring time for 120 s, the flocculation stirring strength for 80 r/min and mixed stirring time for 25 min. The dynamics analysis shows that the velocity gradient G value was existed in intermolecular.

关 键 词：微污染水源水 水力条件 混凝 絮凝 G值 

分 类 号：TU991.2[建筑科学—市政工程]