电化学氧化法去除微污染水中的氨氮  

Removal of ammonia from micro-polluted water by electrochemical oxidation process

作　　者：李炟[1] 王春荣[1] 何绪文[1] 王荣博[1] 赵楠楠[1] 黄柳斌[1] 钱宇[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《环境工程学报》2012年第5期1553-1558,共6页Chinese Journal of Environmental Engineering

基　　金：组织部优秀人才资助项目(20071D1600700416);中国矿业大学(北京)青年基金(2009QH01)

摘　　要：以低氯离子浓度下微污染水中的氨氮(NH4+-N)为研究对象,采用电化学氧化法对污染水中的氨氮进行去除。通过静态和正交实验得到了极板的最佳运行参数。实验结果表明:Cl-浓度在各影响因素中对NH4+-N去除影响最大,且在其他影响因素不变的条件下,通过改变电解电流是解决动态运行时NH4+-N去除率下降较经济有效的方法。最佳运行工艺条件为:电流密度10 mA/cm2,电解时间10 min,极板间距1 cm,溶液初始pH为7,Cl-浓度100 mg/L,面体比102 m2/m3,氨氮的平均去除率在80%以上。Taking the micro-polluted raw water with low chloride ion concentration as the object,electrochemical oxidation process was adopted for NH＋4-N removal.Through the static and orthogonal test,the optimal operating parameters were obtained.The results showed that Cl-made the greatest impact on the ammonia removal in all of the factors,and the more cost-effective method for preventing decrease of ammonia removal efficiency was changing the electrolytic current when the conditions of the other factors were fixed.The optimal reaction conditions were as follows ： current density was 10 mA/cm2,HRT was 10 min,the plate spacing was 1 cm,initial solution pH was 7,Cl-concentration was 100 mg / L,the ratio of area and volume was 102 m2/m3,the average removal rate of ammonia was 80%.

关 键 词：电化学氧化 氨 氮 最佳运行参数 微污染水 

分 类 号：X522[环境科学与工程—环境工程]