化学沉淀法处理高浓度氨氮稀土废水实验研究  

Research on removing ammonia nitrogen in rare earth production wastewater

作　　者：王利平[1] 李义科[1] 庞宏[2] 于玲红[1] 刘长威[1] 陈莉荣[1] 李志军[2] 

机构地区：[1]内蒙古科技大学能源与环境工程学院,内蒙古包头014010 [2]包头钢铁设计研究院,内蒙古包头014010

出　　处：《包头钢铁学院学报》2003年第3期277-280,共4页Journal of Baotou University of Iron and Steel Technology

基　　金：内蒙古自然科学基金资助项目(200208020214)

摘　　要：针对稀土冶炼废水中氨氮污染物浓度高的特点,选择化学沉淀法进行实验研究.当控制影响因素为:pH=9 .0 ,t=1.0h ,m(Mg)∶m(N)∶m(P) =1.3∶1.0∶1.1时 ,经三次化学沉淀 ,废水中氨氮浓度由原来的 130 31mg/L可降至 2 2 0mg/L ,化学沉淀去除率为 η =6 0 %～ 85 % ,为进一步研究降低氨氮浓度创造了条件 .Based on the high content of ammonia nitrogen in rear earth production wastewater,the chemistry-sediment method was used in the experiment.When the controlling effect factors were:pH=9.0,t=1.0 h,m(Mg)∶m(N)∶m(P)=1.3∶1.0∶1.1,the content of ammonia nitrogen was reduced from 13 031 mg/L to 220 mg/L after three time of chemical deposition.The remove rate is η=60%～85%,which is helpful for furthure study on reducing ammonia nitrogen content.

关 键 词：化学沉淀法 稀土废水 氨氮 去除率 

分 类 号：X756[环境科学与工程—环境工程]