有机复合脱氮剂/吹脱法与直接吹脱法的除氨对比  

Comparison of Ammonia Nitrogen Removal by Organic Composite Denitrification Agent/Air-stripping and Traditional Air-stripping

作　　者：雷春生[1] 马军[2] 关小红[2] 王桂玉[3] 

机构地区：[1]江苏工业学院环境与安全工程学院,江苏常州213164 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [3]常州武进友邦净水材料有限公司,江苏常州213163

出　　处：《中国给水排水》2009年第23期82-84,共3页China Water & Wastewater

基　　金：哈尔滨工业大学科研创新基金资助项目(HIT.NSRIF.2008.65);教育部科技创新工程重大项目培育资金资助项目(705013)

摘　　要：自制一种以乳酸乙酯为主体的有机复合脱氮剂,并对比了直接吹脱法和有机复合脱氮剂/吹脱法对氨氮的去除效果。结果表明,有机复合脱氮剂/吹脱法对氨氮的去除率可达99.99%以上,废水中剩余氨氮的浓度最低可达0.2mg/L。有机复合脱氮剂/吹脱法的最佳pH比直接吹脱法的低,节省了加碱量;其最佳气液比是直接吹脱法的1/10,大大节约了能耗。有机复合脱氮剂/吹脱法前0.5h的平均吹脱速率是直接吹脱法的2倍。在常温条件下,其吹脱1.5h后对氨氮的去除率比直接吹脱6h的高;而在加热条件下,其吹脱1h后对氨氮的去除率就比直接吹脱6h的高,从而大大缩短了吹脱时间。An organic composite denitrification agent composed of ethyl lactate was prepared,and the removal effect of ammonia nitrogen by organic composite denitrification agent/air-stripping was compared with that by traditional air-stripping method. The results show that the removal rate of ammonia nitrogen by organic composite denitrification agent/air-stripping is above 99.99%,the concentration of residual ammonia is 0.2 mg/L. Its optimal pH is lower than the pH of traditional air-stripping,saving the alkali addi...

关 键 词：氨氮 直接吹脱法 有机复合脱氮剂 

分 类 号：X703[环境科学与工程—环境工程]