摘要
研究以沸石粉为主要原料,添加木屑、淀粉等有机物为碳化结合剂,通过造粒、氮气气氛低温热处理制备得到了粒度为0.5~1 cm的沸石-炭复相材料水处理剂颗粒,研究了不同碳化结合剂含量和不同热处理温度等氨氮超标污水的吸附性能影响。采用场发射扫描电镜对沸石-炭复相材料进行了显微形貌观察。通过氨氮吸附实验得出,相同质量条件下沸石-炭复相材料水处理剂颗粒在吸附速率上弱与沸石粉体,在足够吸附时间下对氨氮的吸附量同沸石粉体吸附量接近。5%碳化结合剂添加量样品有最优氨氮吸附性能,起始浓度为15 mg/L氨氮溶液被吸附24 h后氨氮溶液浓度降为4.69 mg/L,氨氮吸附量为1.03 mg/g;吸附100 h后氨氮溶液浓度降为1.35 mg/L,氨氮吸附量为1.36 mg/g。
Zeolite-carbon composite material for water treatment with a size of 0.5~1 cm were prepared using zeolite powders as main raw material and organic matter such as wood chips and starch as carbonized binder via granulation and low temperature heat treatment at nitrogen atmosphere.The effects of different content of carbonized binders and different heat treatment temperatures on the adsorption performance of ammonia-nitrogen exceeded wastewater were studied.Microscopic morphology of zeolite-carbon composite materials was observed by field emission scanning electron microscopy.According to ammonia nitrogen adsorption experiment,under the same conditions,the ammonia nitrogen adsorption rate of zeolite-carbon composite material was weak than zeolite powders,but the adsorption amount of ammonia nitrogen was close to that of zeolite powder under sufficient adsorption time.The sample with 5% carbonized binder added had optimal ammonia nitrogen adsorption performance,the concentration of ammonia nitrogen solution was decreased from 15 mg/L to 4.69 mg/L after 24 hours adsorption,the ammonia nitrogen adsorption amount was 1.03 mg/g.After adsorption for 100 h,the ammonia nitrogen solution concentration decreased to 1.35 mg/L,and the ammonia nitrogen adsorption amount was 1.36 mg/g.
作者
吴小贤
李春生
陈玲霞
潘方珍
田莉
耿宁一
WU Xiaoxian;LI Chunsheng;CHEN Lingxia;PAN Fangzhen;TIAN Li;GENG Ningyi(Zhejiang Institute of Geological&Mineral Resources;Key Laboratory of Clay Minerals,Ministry of Land and Resources;Engineering Research Center of non-metallic Minerals of Zhejiang Province:Hangzhou 310007,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2020年第2期44-47,51,共5页
Technology of Water Treatment
基金
浙江省公益技术应用研究项目(2017C33006)
浙江省地质勘查局地质科技项目(浙地勘2019-6)。
关键词
沸石
炭
氨氮
吸附性能
zeolite
carbon
ammonia nitrogen
adsorption performance
