摘要
为了经济、高效的提高西北农村地区微污染窖水的水质,实验采用PAC/NPAM/木质粉末活性炭与超滤联用处理微污染窖水,考察了对浊度、氨氮、UV254以及CODMn的去除效果以及对膜通量的变化研究,并且将其与单独超滤、3种强化混凝(PAC、PAC/NPAM、PAC/NPAM/木质粉末活性炭)进行对比,其结果表明:联用技术的去除效果较单独超滤与PAC/NPAM/木质粉末活性炭的去除效率都高,其中联用技术对氨氮、CODMn、UV254的去除率分别为50.07%,63.05%和84.7%,而单独超滤的去除率为15.36%,23.50%,16.17%,PAC/NAPM/木质粉末活性炭联合投加的去除率为42.09%,50.47%,64.25%;同时,联用技术下的膜通量衰减速率比单独超滤的缓慢,其中混凝沉淀/超滤的膜通量的衰减速率比单独超滤的平均减缓了36.24%,而在线混凝/超滤的膜通量的衰减速率比单独超滤的平均减缓了42.23%,适用于农村微污染窖水的净化。
In order to economically and efficiently improve the water quality of micro-polluted water in rural areas of Northwest China,PAC/NPAM/wood powder activated carbon and ultrafiltration are used to treat micro-polluted water,and the turbidity,ammonia nitrogen,UV 254 and COD Mn are investigated.The removal effect and the membrane flux are studied,and compared with the single ultrafiltration and three kinds of enhanced coagulation(PAC,PAC/NPAM,PAC/NPAM/wood powder activated carbon),the results showthat the removal effect of combined technology is higher than that of single ultrafiltration and PAC/NPAM/wood powder activated carbon.Among them,the removal rates of ammonia nitrogen,COD Mn and UV 254 by the combined technology are 50.07%,63.05%,and 84.7%,respectively,while the removal rates of ultrafiltration alone are 15.36%,23.50%,and 16.17%.The removal rate of the combined use of PAC/NPAM/wood powder activated carbon are 42.09%,50.47%,64.25%;At the same time,the membrane flux decay rate under the combined technology is slower than that of the ultrafiltration alone,and the decay rate of the membrane flux of coagulation sedimentation/ultrafiltration is 36.24%slower than that of ultrafiltration alone.The decay rate of the membrane flux of the filtration is 42.23%slower than that of the ultrafiltration alone,which is suitable for the purification of rural micro-polluted cellar water.
作者
李世勇
武福平
张国珍
张子贤
郭译文
LI Shi-yong;WU Fu-ping;ZHANG Guo-zhen;ZHANG Zi-xian;GUO Yi-wen(College of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Zhongen Engineering Technology Co.,Ltd.,Guangzhou 510000,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第12期2982-2985,2997,共5页
Applied Chemical Industry
基金
国家重点研发计划(2019YFD1100103)
国家自然科学基金(51768031)
国家重点研发计划项目(2016YFC0400703)。
关键词
窖水
微污染
强化混凝
超滤
膜通量
hydrophobic water
micro-contamination
enhanced coagulation
ultrafiltration
membrane flux
