钽铌冶炼高浓度氨氮废水处理试验研究  

Study on the treatment of highly concentrated ammonia-nitrogen wastewater in Ta/Nb metallurgy

作　　者：聂锦旭[1] 唐文广[1] 

机构地区：[1]广东工业大学城市公用设备工程系,广东广州510006

出　　处：《工业水处理》2009年第12期20-22,共3页Industrial Water Treatment

摘　　要：用化学沉淀法和离子交换法处理钽铌厂氨氮废水,并探讨了试验过程中的影响因素。实验结果表明,钽铌冶炼高浓度氨氮废水通过3次化学沉淀法连续处理,氨氮质量浓度由12800mg/L降到220.5mg/L,再用离子(沸石)交换处理,控制反应时间为1.0h,pH为9.0,温度为20℃,最终出水氨氮质量浓度降为10.7mg/L。The chemical precipitation and ion exchange processes have been used for treating ammonia-nitrogen wastewater in Ta/Nb factories. The influencing factors during the experiments are discussed. The experimental results indicate that highly concentrated ammonia-nitrogen wastewater in Ta/Nb metallurgy should be treated by chemical precipitation method for three times continuously. The concentration of ammonia-nitrogen is reduced from 12 800 mg/L to 220.5 mg/L. Then, ion （zeolite） exchange process is used for the treatment. The final effluent ammoriia-nitrogen concentration reaches 10.7 mg/L. The controlled reaction condition are： t=1.0 h, pH = 9.0, and T=20 ℃.

关 键 词：化学沉淀法 离子交换法 高浓度氨氮 

分 类 号：X703.1[环境科学与工程—环境工程]