改性粉煤灰超声辅助吸附低浓度氨氮废水的研究  

Study on Modified Fly Ash Ultrasound-assisted Adsorption of Low Concentration Ammonia Nitrogen Wastewater

作　　者：缪应菊[1] 敖显字 胡庆林[1] 李琳[1] 陈定梅[1] 

机构地区：[1]六盘水师范学院化学与化学工程系,贵州六盘水553004

出　　处：《环境科学与技术》2016年第6期145-149,共5页Environmental Science & Technology

基　　金：贵州省教育厅高等学校创新人才团队(黔教合人才团队字[2014]46);贵州省教育厅自然科学研究项目(黔教合KY字[2013]201);贵州省科技厅资助项目(黔科合J字LKLS[2013]25)

摘　　要：将改性粉煤灰应用于氨氮废水中,考察改性粉煤灰的吸附方式、超声功率、吸附时间、吸附剂投加量、吸附剂粒度和溶液p H值对氨氮去除率的影响。结果表明:(1)适宜功率的超声辅助有利于氨氮吸附过程的进行;(2)在pH值为5、浓度100 mg/L的氨氮废水中,投加180目的粉煤灰10 g,240 W超声功率下吸附5 h,氨氮的去除率可达90.7%。The modified fly ash is applied to the ammonia nitrogen wastewater,to discuss the effect of adsorption method and ultrasonic power,contact time,adsorbent dose,particle size and p H value on ammonia nitrogen removal rate. The results showed that suitable ultrasound power were in favor of the adsorption process. With adsorption for 5 h under ultrasound power 240 W,initial ammonia nitrogen concentration 100 mg/L,adsorbent dosage 10 g,particle size 180 mesh and pH 5,ammonia nitrogen removal rate could reach 90.7%.

关 键 词：改性粉煤灰 超声 氨氮去除率 

分 类 号：X703[环境科学与工程—环境工程]