改性沸石处理低浓度氨氮水的实验研究  

Study on Modified Zeolite for Thetreatmen to flow Concentration Ammonium from Water

作　　者：黄雅莉 郭琳[2] 

机构地区：[1]江苏久力环境股份科技有限公司赣州分公司,江西赣州341000 [2]江西理工大学江西省矿冶环境污染控制重点实验室,江西赣州341000

出　　处：《山东化工》2018年第4期153-156,共4页Shandong Chemical Industry

摘　　要：在对NaCl改性沸石吸附处理模拟氨氮水单因素研究基础上,对该吸附过程的吸附等温线及动力学模型进行了分析。实验结果表明:在最佳改性条件下得到的NaCl改性沸石在室温(27℃),初始氨氮浓度30 mg/L,溶液pH值6,投加量5 g/L以及反应时间90 min时,氨氮去除率高达90.7%,吸附剂的吸附容量为8.97 mg/g。且吸附过程更符合Langmuir等温吸附模型,其相关系数为0.9973。吸附动力学分析表明,NaCl改性沸石吸附模拟氨氮水更符合准二级动力学模型,其相关系数为0.9988。Onthe basis of studying single factor for ammonia nitrogen( NH_4^+-N) treatment by Na Cl modified zeolite,the adsorption isotherm and kinetic model of the adsorption process were analyzed. The experimental results show that under the best conditions for Na Cl modified zeolite as room temperature( 27 ℃),initial NH_4^+-N concentration 30 mg/L,solution pH 6,dosage 5 g/L and reaction time 90 min,the NH_4^+-N removal rate reached 90. 7%,and the sorbent adsorption capacity was 8. 97 mg/g.The adsorption process is more in line with the Langmuir isothermal model,with correlation coefficient 0. 9973. The adsorption kinetics analysis showed that the adsorption of NH_4^+-N water by Na Cl modified zeolite was more in accordance with the pseudo-second order kinetic model,with correlation coefficient 0. 9988.

关 键 词：氨氮 沸石 改性 吸附剂 

分 类 号：X703[环境科学与工程—环境工程]