复合型生物絮凝剂处理低温低浊水影响因素  

Influence factors in treatment of low temperature and low turbidity water by compound bioflocculant

作　　者：孟路[1] 杨基先[1] 马放[1] 庞长泷[1] 金超[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2009年第8期42-45,共4页Journal of Harbin Institute of Technology

基　　金：国家重点基础研究发展计划(973)项目(2004CB418505)

摘　　要：为探讨复合型生物絮凝剂(CBF)在处理低温低浊水源水过程中的影响因素,采用实验室静态试验方法,考察投加量、pH、阳离子絮凝剂等因素对絮凝效果的影响.结果表明:在单独使用CBF时,当投药量范围在5～17.5mg/L以内,CBF可有效地去除水中浊度与高锰酸盐指数(CODMn),最佳投加量为7.5mg/L.CBF在弱碱性条件下絮凝率较高,最佳pH为8.0.在混凝过程中投加阳离子絮凝剂可有效提高CBF对低温低浊水的处理效果并减少投药量.在与聚合氯化铝铁(PAFC)复配使用时,最佳投药量分别为4mg/L和10mg/L,此时浊度去除率为73.0%,CODMn去除率为60.7%.The application of compound biofloccutant （CBF） in the treatment of low temperature and low turbidity water was studied in this work. The jar test was adopted to examine the effects of hydrogen ion concentration （ pH）, the CBF dosage and the cationic flocculant dosage on the removal efficiency of turbidity. Coagulation test shows that CBF has an effective performance with dosage of 5.0 - 17.5 mg,/L in alkalescence environment. The optimal conditions for treatment of low temperature and low turbidity water by CBF are the dosage of 7.5 mg/L and pH of 8.0. The cationic flocculant can increase the production of flocs. Based on an overall analysis of removal efficiency and economic sectors, the optimal dosages for treatment of low turbidity water are CBF of 4 mg/L and PAFC of 10 mg/L, then the turbidity removal rate is 73. 0% and the CODM, removal is 60.7%.

关 键 词：低温低浊水 复合型生物絮凝剂 聚合氯化铝铁 混凝 

分 类 号：X524[环境科学与工程—环境工程]