次氯酸钠氧化法去除电镀废水中的氨氮  

Removal of ammonia nitrogen from pretreated electroplating wastewater by oxidation with sodium hypochlorite

作　　者：胡小兵[1,2] 赵鑫[1,2] 刘孔辉[1,2] 叶星[1,2] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243032 [2]安徽工业大学生物膜法水质净化及利用技术教育部工程研究中心,安徽马鞍山243032

出　　处：《电镀与涂饰》2014年第5期214-216,共3页Electroplating & Finishing

基　　金：安徽省高校省级科学研究项目(KJ2013A059)

摘　　要：以次氯酸钠为氧化剂,对预处理过的实际电镀废水中的氨氮进行处理。研究了NaClO投加量、进水pH、曝气量和搅拌方式对氨氮去除效果的影响。结果表明,曝气量和搅拌方式对氨氮去除效果的影响不大。较适宜的工艺条件为:NaClO溶液(有效氯含量6%)50 mL/L,pH 1.50,曝气量0.40 L/min。经本工艺处理的出水氨氮符合国标要求,说明采用次氯酸钠氧化法去除电镀废水中的氨氮可行。Sodium hypochlorite was used as an oxidant to treat the ammonia nitrogen in a pretreated electroplating wastewater. The effects of NaC10 dosage, influent pH, aeration rate, and agitation method on the removal efficiency of ammonia nitrogen were studied. It is shown that aeration rate and agitation method have insignificant impact on the removal of ammonia nitrogen. The suitable process parameters are： NaC10 （available chlorine 6%） 50 mL/L, pH 1.50, and aeration rate 0.40 L/rain. The content of effluent ammonia nitrogen after treatment by the given process meets the national discharge standard, illustrating that using sodium hypochlorite-oxidation method to remove the ammonia nitrogen in electroplating wastewater is practicable.

关 键 词：电镀废水 次氯酸钠 氨氮 去除效果 

分 类 号：X781.1[环境科学与工程—环境工程]