结团絮凝工艺处理除铁除锰滤池反洗废水的试验  

Experiment of Pellet Coagulation Dispose Back Flushing Waste Water in Deironing and Demanganization Filter

作　　者：张吉库[1] 胡立锋[1] 杨柳 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]中国市政工程东北设计研究总院,吉林长春130000

出　　处：《沈阳建筑大学学报（自然科学版）》2016年第2期341-346,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十二五科技支撑计划项目(2012BAJ26B02)

摘　　要：目的研究结团絮凝工艺对地下水除铁、除锰滤池反冲洗废水的处理效果,并确定最佳混凝剂及最佳运行工艺参数.方法取沈阳六水厂除铁、除锰滤池中铁质量浓度为260～280 mg/L,锰质量浓度为5.2～6.3 mg/L,p H值为6.8的反冲洗废水为处理原水.试验用水经高位平衡水箱流入静态混合器中与混凝剂充分混合,经管式反应流入结团絮凝装置反应后实现泥水分离并排出.结果结团絮凝工艺的最佳混凝剂为聚丙烯酰胺（PAM）;当p H值为8.2,PAM投加量为7 mg/L,搅拌时间分别为10 min,搅拌速度为160 r/min,沉淀时间为15 min时,结团絮凝工艺处理后的出水铁质量浓度稳定在2.85 mg/L以下,锰质量浓度稳定在0.8 mg/L以下.结论结团絮凝工艺处理的高铁、高锰反冲洗废水可与原水混合后处理,达到回收利用的目的,从而实现水厂＂零排放＂的目标.Study the dispose effect of pellet coagulation on back flushing waste water in deironing and demanganization filter and determine the optimum coagulant and operation parameters. The backwash waste water with the iron concentration of 260 ～ 280 mg / L,manganese concentration of5. 2 ～ 6. 3 mg / L,p H value of 6. 8 from deironing and demanganization filter in Shenyang sixth water works was taken as the rawwater. The rawwater in high- order position balance tank which was flewinto static mixer and intensive mixed with coagulant in pipe type reaction was flewto pellet coagulation device,and was discharged after slurry separation. The optimum coagulant of pellet coagulation is polyacrylamide（ PAM）; When the p H value is 8. 2,the PAM dosage is 7 mg /L,the stirring time is 10 min,the stirring speed is 160 r / min,the precipitation time is 15 min,Ironconcentration of disposed water by pellet coagulation stabilizes at 2. 85 mg / L or less,and manganese concentrations stabilizes at 0. 8 mg / L or less. work directly in joint disposal with groundwater sources,achieve the purpose of recycling,so as to achieve water＂zero emissions＂goal.

关 键 词：结团絮凝 反冲洗废水 零排放 回收利用 

分 类 号：X703.1[环境科学与工程—环境工程]