城市溢流雨水的磁絮凝净化初步研究  

Primary Study on Treatment of Municipal Rainwater Overflow by Magnetic Coagulation

作　　者：刘兴[1] 吴春笃[1] 解清杰[1] 朱国峰[1] 朱莉萍[1] 段明飞[1] 

机构地区：[1]江苏大学环境学院,江苏镇江212013

出　　处：《工业安全与环保》2011年第2期4-6,9,共4页Industrial Safety and Environmental Protection

基　　金：国家"十一五"重大水专项资助项目(2008ZX07317-001);江苏省社发项目(BE2008615)

摘　　要：采用磁絮凝方法处理城市溢流雨水,以自制的絮凝剂PSFS和磁种为原料做絮凝试验,研究了磁场、絮凝剂投加量、磁种投加量、废水pH等参数对絮凝效果的影响。实验结果表明,磁场可以改变絮凝剂的理化性质,增强絮凝剂的净水效果。通过实验确定了最佳实验条件,在场强为8 000 Gs,磁种投加量为200 mg/L,絮凝剂投加量为4 mL/L,废水pH值为6的条件下,对模拟溢流雨水中的TSS、浊度、COD、TP和NH3-N的去除率分别为98.4%,98.6%,63.9%,93.2%和36.6%。磁絮凝技术运行操作简单且具有启动快、处理负荷高和耐水力冲击的优点,可推广应用于多雨城市溢流污染控制中。Municipal rainwater overflow is treated by magnetic flocculation.The parameters such as magnetic field,the dosage of flocculation and magnetic particle,pH value are investigated.It could been seen that in magnetic field,the physico-chemical property of flocculation is modified and the effect of treatment is strengthened.The optimum technological parameters are determined as follows：magnetic density 8 000 Gs,PSFS=4 mL/L,pH=6,dosage of magnetic particle 150 mg/L and the removal rate of TSS,turbidity,COD,TP and NH3-N was up to 98.4%,98.6%,63.9,93.2% and 36.6% respectively.The technology of magnetic coagulation has many advantages,such as quick start-up,high treating capacity,hydraulic shockresistant,so it can be used to control the rainwater overflow pollution effectively in those rainy cities.

关 键 词：磁絮凝 溢流雨水 絮凝剂 雨水径流 

分 类 号：TU991.2[建筑科学—市政工程]