壳聚糖改性沸石分子筛对氨氮的动态吸附研究  

Study on Dynamic Adsorption of Ammonia Nitrogen by Chitosan Modified Zeolite Molecular Sieve

作　　者：郜玉楠[1] 李懋锋 包顺宇 刘佳琦 GAO Yunan;LI Maofeng;BAO Shunyu;LIU Jiaqi(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2021年第1期187-192,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家重点研发计划项目(2018YFD1100500-03-03)。

摘　　要：目的研究壳聚糖改性沸石分子筛对氨氮过滤吸附的最佳工艺参数,并探究壳聚糖改性沸石分子筛对氨氮过滤吸附效能的影响因素。方法使用有机玻璃柱模拟滤池,通过控制不同滤层高度及滤速以确定最佳工艺参数,针对不同温度、pH值、原水质量浓度等分析单因素的变化对过滤氨氮的影响。结果最佳工艺参数:滤层高度为70 cm,滤速为4 m/h。温度在30℃时,对氨氮的过滤效果最优,可达到97.31%;pH值为6.5时,对氨氮的去除率最高为96.98%;原水质量浓度为7 mg/L时,对氨氮的去除效果最好可达到97.1%。结论壳聚糖改性沸石分子筛复合吸附颗粒对氨氮具有良好的过滤效果,该新型吸附颗粒可作为滤料用于水厂的提标改造。The optimum process parameters of chitosan modified zeolite molecular sieve for ammonia nitrogen filtration adsorption,and its factors affecting the adsorption efficiency were explored by the plexiglass column simulated filter.By controlling the height and filtration speed of different filter layers to determine the optimal process parameters,the effects of single factor changes on the filtration of ammonia nitrogen were analyzed for different temperatures,pH values,and raw water mass concentrations.The optimum process parameters were determined as follows:the filter height was determined to be 70 cm and the filtration rate was 4 m/h.When the temperature is 30℃,the filtration effect of ammonia nitrogen is optimal,which can reach 97.31%;when the pH value is 6.5,the removal rate of ammonia nitrogen is 96.98%;when the concentration of raw water is 7mg/L,the removal effect of ammonia nitrogen is the most.It can reach 97.1%.The chitosan-modified zeolite molecular sieve composite adsorption particles have a good filtering effect on ammonia nitrogen.The new adsorption particles can be used as a filter material for the upgrading of water plants.

关 键 词：壳聚糖 沸石分子筛 过滤 氨氮 

分 类 号：TU991.21[建筑科学—市政工程] X523[环境科学与工程—环境工程]