改性天然斜发沸石去除氨氮的工艺  

Technology for Removing Ammonia Nitrogen by Modified Natural Clinoptilolite

作　　者：王建辉[1] 朱星宇 李广[1] 刘智 张小雨 曲智 刘志生 WANG Jianhui;ZHU Xingyu;LI Guang;LIU Zhi;ZHANG Xiaoyu;QU Zhi;LIU Zhisheng(School of Municipal and Environmental Engineering,Jilin Jianzhu University,Changchun 130118,China)

机构地区：[1]吉林建筑大学市政与环境工程学院,长春130118

出　　处：《长春工程学院学报（自然科学版）》2024年第3期96-104,共9页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：吉林省自然科学基金(20210101085JC);吉林省科技发展计划资助项目(20200403007SF,20200503003SF)。

摘　　要：氨氮污染对环境和生态系统的重大影响使水处理领域氨氮污染的去除一直是人们关注的重点。为了更有效地去除污水中的氨氮污染,研究采用酸、碱、盐及热处理等方法对海林斜发沸石改性,并进行沸石的形貌分析和吸附容量的测定,研究了天然及改性后的斜发沸石对污水中氨氮的吸附效果。试验结果表明,4种改性处理均会对斜发沸石的交换性能产生影响,其中盐改性的效果最好,且更容易实际操作,改性后的斜发沸石仍符合Lagmuir型平衡关系式。根据钠、钾、钙3种盐的离子交换等温线可知,三者对NH^(+)_(4)的交换等温线均为d型曲线,三者选择性交换能力钠沸石>钙沸石>钾沸石。斜发沸石可有效再生,且经过盐处理改性后的斜发沸石能够更有效地吸附污水中的氨氮。The significant impact of ammonia nitrogen pollution on the environment and ecosystem has always made the removal of ammonia nitrogen pollution a focus of attention in the field of water treatment.In order to effectively remove ammonia nitrogen pollution from sewage,acid,alkali,salt,and heat treatment methods are used to modify Hailin clinoptilolite,and the morphology analysis and adsorption capacity of the clinoptilolite are determined.The experimental results show that all four modification treatments would affect the exchage performance of clinoptilolite,among which salt modification has the best effect and is easier to operate in practice.The modified clinoptilolite still conforms to the Lagmuir type equilibrium relationship.According to the ion exchange isotherms of the three salts of sodium,potassium,and calcium,it can be seen that the NH^(+)_(4) exchange isotherms of all three d-type curves,and the selective exchange ability of the three is sodium zeolite>calcium zeolite>potassium zeolite.Clinoptilolite can be effectively regenerated,and the modified clinoptilolite after salt treatment can more effectively adsorb ammonia nitrogen in sewage.

关 键 词：改性 天然斜发沸石 氨氮吸附容量 离子交换 

分 类 号：X506[环境科学与工程—环境工程]