摘要
采用混凝-电渗析耦合工艺对汾河排污渠中COD和氨氮的去除具有良好效果,能有效治理汾河污染。混凝预处理中最佳混凝剂是聚合氯化铝,最佳投量为6mg/L,COD和浊度的去除率分别达73%和77%,且吨水处理成本低。出水进入电渗析器处理,COD、NH3-N的去除率分别为63%和96.4%。因此,采用混凝-电渗析耦合法处理汾河排污渠污水,出水中COD和NH3-N的浓度分别为24.3mg/L和1.5mg/L,COD和NH3-N总去除率分别为90%和96.9%,完全满足地表水Ⅳ类标准的水质要求。NH4+的迁移符合一级动力学。此法工艺流程短,技术先进,能耗低,无二次污染。
The method of using Coagulation and electrodialysis can be efficiently employed to remove COD and ammonia from Fenhe River at high rates.The result of Coagulation test shows that the best coagulant is PAC with optimal dosage of 6mg/L,the removal efficiency of COD and NH3-N is 73%and 77%respectivly.The result of electrodialysis test shows that the removal efficiency of COD and NH3-N is 63%and 96.4%,respectivly.So,by using Coagulation and electrodialysis,the concentration of COD and NH3-N is 24.3mg/L and 1.5mg/L,and the total removal efficiency of COD and NH3-N is 90%and 96.9%respectively.The effluent meets the national standard of surface waterⅣ.The migration process of NH4＋ is following one class reaction kinetics.This method is of short process and low energy,relatively economical investment, and no secondary pollution is produced.
出处
《长春理工大学学报（自然科学版）》
2011年第2期161-164,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
山西省科技厅山西省大学生创新创业计划项目(100115153)
关键词
混凝剂
电渗析
氨氮
coagulant
electrodialysis
ammonia nitrogen
