改性粉煤灰对垃圾渗滤液中氨氮的吸附影响  

The Adsorbability of Ammonia Nitrogen from Landfill Leachate with Modified Fly Ash

作　　者：宋丽 杨清[1] 李颖颖[1] 张松刚[1] 刘少敏[1] Li Song;Qing Yang;Yingying Li;Songgang Zhang;Shaomin Liu(School of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan,Anhui)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南

出　　处：《水污染及处理》2015年第3期37-45,共9页Water Pollution and Treatment

基　　金：大学生创新训练计划(201310361124),(AH201410361003);安徽理工大学大学生科研资助项目(ZZ1409)。

摘　　要：采用溶胶–凝胶法改性粉煤灰,并在500℃下煅烧消除残余有机物。通过改性粉煤灰处理淮南市垃圾渗滤液脱氮效率的研究,从而为去除垃圾渗滤液中的NH+4-N提供了一个有效的方法。通过垃圾填埋场渗滤液的吸附实验,发现pH值接近中性,改性粉煤灰投加量为3 g/L,低浓度垃圾渗滤液中的NH+4-N去除率接近100%;垃圾渗滤液NH+4-N的初始浓度为16 mg/L时NH+4-N去除率为80.24%。结果表明,改性粉煤灰的吸附性能较好。Fly ash was modified by sol-gel method, and calcined at 500?C to remove the residual organic matter. Through the study of NH+4-N removal efficiency in the treatment of landfill leachate of Huainan city with modified fly ash, an efficient way was provided to remove NH+4-N in landfill leachate. Through the absorption experiment of landfill leachate, it found that pH is close to neutral, the dosing quantity of modified fly ash is 3.0 g/L, the removal rate of NH+4-N in landfill leachate under the low concentration is close to 100%;Initial concentration of NH+4-N in waste leachate is 16 mg/L, the NH+4-N removal rate was 80.24%. It shows that the adsorption performance of modified fly ash is better.

关 键 词：改性粉煤灰 垃圾渗滤液 氨氮 吸附动力学 

分 类 号：X7[环境科学与工程—环境工程]