改性沸石氨氮吸附剂的制备及其在生活污水处理中的应用  

Preparation of Modified Zeolite Ammonia Nitrogen Adsorbent and Its Application in Domestic Sewage Treatment

作　　者：傅金祥[1] 张延平 李森 由昆[1] 范冬晗 李欣[1] FU Jinxiang;ZHANG Yanping;LI Sen;YOU Kun;FAN Donghan;LI Xin(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Shenyang Water Group,Shenyang 110000,China)

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168 [2]沈阳水务集团,沈阳110000

出　　处：《硅酸盐通报》2021年第5期1728-1734,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家水体污染控制与治理科技重大专项子任务(2018ZX07601001-3)。

摘　　要：针对部分地区污水厂常规处理工艺排水氨氮超标的问题,通过制备改性沸石氨氮吸附剂,结合吸附试验、表征分析和中试试验对改性沸石去除城市生活污水中氨氮的性能进行深入研究,考察了改性沸石氨氮吸附剂最佳的制备工艺与氨氮去除特性。结果表明:改性沸石氨氮吸附剂有着更多的钠型沸石与孔道;在NaCl浓度为1.5 mol/L,搅拌时间为3 h,加热温度为75℃时,平均氨氮去除率与吸附量分别达到83.51%和0.840 mg/g;中试试验结果显示,经改性沸石氨氮吸附剂过滤后的水中氨氮含量稳定在2.0 mg/L以下,且吸附剂可再生后重复使用。该研究可为城市生活污水氨氮处理提供理论依据。In order to solve the problem of excessive ammonia nitrogen in the drainage of conventional sewage treatment process in some areas,through the preparation of modified zeolite ammonia nitrogen adsorbent,combined with adsorption experiment,characterization analysis and pilot test,the performance of the modified zeolite ammonia nitrogen adsorbent for the removal of ammonia nitrogen from municipal domestic sewage was deeply studied and the optimum preparation process and removal characteristics of the modified zeolite ammonia nitrogen adsorbent were investigated.The results show that the modified zeolite ammonia nitrogen adsorbent has more sodium zeolite and pore channels,and the removal rate and adsorption amount of ammonia nitrogen reach 83.51% and 0.840 mg/g respectively at NaCl concentration of 1.5 mol/L,stirring time of 3 h and heating temperature of 75℃.The pilot test results show that the content of ammonia nitrogen in the water filtered by modified zeolite ammonia nitrogen adsorbent is stable below 2.0 mg/L,and the adsorbent can be recycled and reused.This study can provide theoretical basis for ammonia nitrogen treatment of municipal domestic sewage.

关 键 词：改性沸石 氨氮吸附剂 中试试验 城市生活污水 

分 类 号：X52[环境科学与工程—环境工程]