摘要
对天然沸石粉及其改性后对水体中低浓度氨氮的吸附去除进行实验研究,发现当吸附时间是90min,废水pH值为5左右时,天然沸石粉的氨氮去除率达54.77%,吸附氨氮的效果最好;天然沸石粉在100℃下,经0.3 mol/L的氯化钠溶液改性效果最好,改性沸石粉在吸附时间60 min,pH为5时,氨氮去除率达98.85%,吸附氨氮的效果最好。综合比较在各自最优工艺条件下,最佳改性后的改性沸石粉是天然沸石粉吸附氨氮的1.81倍。
The experiments are carried out for removing and adsorbing the Ammonia Nitrogen of Low Concentration in theSewage by Modified Zeolite Powder.It is found that the ammonia adsorption capacity of natural zeolite powder can reach the best ad -sorption （54.77%） as pH of sewage is about 5 and adsorption time is 90 minutes.Natural zeolite powder at 100 ℃ by 0.3mol /Lsodium chloride solution works best modification , whereas the ammonia nitrogen removal rate of modified zeolite powder reaches98.85% and the effect of adsorbed ammonia best at the adsorption time of 60 minutes and pH of 5.Under the the respective optimumconditions, the adsorbed ammonia capacity of the best modified zeolite powder is 1.81 as much as natural zeolite powder.
出处
《东莞理工学院学报》
2014年第1期78-81,共4页
Journal of Dongguan University of Technology
基金
国家"十二五"水专项子课题:东深供水工程水质改善技术集成与综合示范(2012ZX07206-004)
关键词
沸石粉
氨氮
改性
污水
zeolite powder
ammonia nitrogen
modification
sewage
