天然沸石吸附去除城市尾水中氨氮研究  

Adsorption Performance of Ammonia Nitrogen in Urban Tail Water on Natural Zeolite

作　　者：徐佳莹[1] 刘婉霞[1] 庞少华[1] 方媛[1] 陶正凯 荆肇乾[1] 

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《化工技术与开发》2016年第6期52-55,共4页Technology & Development of Chemical Industry

基　　金：住房和城乡建设部科学技术项目(2015-K7-012);江苏省"十二五"重点建设专业项目资助;南京林业大学大学生创新创业训练计划项目(2015sjcx096)

摘　　要：采用天然沸石去除城市尾水中的氨氮,研究了温度、振荡速度、沸石用量、吸附时间等因素对氨氮吸附作用的影响,并对沸石的吸附动力学进行研究。实验结果表明,常温(20℃)对低浓度氨氮的吸附效果较好,沸石对氨氮具有快速吸附的特点,随着时间的增加,沸石对氨氮的去除变化缓慢。在振荡速度为60r·min^(-1)时,对氨氮的吸附效果较好。随着沸石投加量的增加,氨氮的去除率增加,但沸石的吸附质量比减少,利用率降低。The natural zeolites were used to remove ammonia nitrogen in the tail water of municipal sewage plant. The influence of temperature, rotating speed, dosage of zeolite and the adsorption time on the adsorption characteristics of ammonia and the adsorption kinetics of ammonia nitrogen were studied. The results indicated that zeolite adsorption of low concentration ammonia nitrogen was efficient under normal temperature(20℃).Zeolite had the characteristics of rapid absorption to ammonia nitrogen. With the increase of time, ammonia nitrogen removal by zeolite changed slowly. When shockingrate wasat 60 r/min,theadsorptionof ammonia onthe zeolite was good. With the increase of zeolite dosage, ammonia removal rate increased, but the adsorption mass ratio of the zeolite decreased,resulting in low utilization rate of zeolite.

关 键 词：沸石 氨氮 吸附 影响因素 

分 类 号：X703[环境科学与工程—环境工程]