稀土吸附剂的制备及去除水中氨氮的研究  

Manufacture of Rare Earth Absorbent and Research on Removing Ammonia Nitrogen from Water

作　　者：江喆[1] 宁平[1] 普红平[1] 邓春玲[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650093

出　　处：《武汉理工大学学报》2004年第6期18-20,28,共4页Journal of Wuhan University of Technology

基　　金：昆明理工大学学生课外学术科技创新基金

摘　　要：通过浸渍 -干燥 -焙烧法制备了负载镧氧化物的稀土吸附剂 ,探讨了该吸附剂对水中氨氮的吸附性能。实验表明 ,制备稀土吸附剂的适宜镧离子浓度为 0 .0 5 m ol/ L ,最佳焙烧温度为 5 0 0℃。同时实验为了探讨改性沸石吸附氨氮的效果 ,采取不同的实验条件进行了研究。结果表明 ,当溶液 p H值为 8～ 10 ,投加量为 4 g/ L ,接触时间在 4 h,氨氮的去除效率可以达到 85 %以上 ,从而为含氨氮废水的处理提供了一条高效、经济的新途径。By means of maceration-dryness-roast,the author added rare earth oxide to the zeolite,which produced a new absorbent,which has the ability to remove ammonia nitrogen.The results showed that the optimal absorbent manufacture process are based on the following conditions:the zeolite carrier must be soaked in the 0.05 mol/L La 3+ solution and the temperature of toasting must be at 500 ℃.In addition,to explore the removal efficiency of ammonia nitrogen by activated zeo1ites,the author did this study under the different conditions.The experimental results showed that with the pH number that is between 8～10,the total amount being 4 g/L and the reaction time for about 4 hours,the removal efficiency of ammonia nitrogen will be up to 85%,This method has provided a new economical way for the treatment of nitrogen-containing wastewater.

关 键 词：改性沸石 稀土 氨氮 去除率 

分 类 号：X703.1[环境科学与工程—环境工程]