摘要
长期以来,饮用水含氟量超标一直困扰着许多经济欠发达地区的人民。工业含氟废水的处理同样也是一个需要慎重对待的问题。水体脱氟手段主要有沉淀法、吸附法和膜分离法。沉淀法可分为化学沉淀法和物理沉淀法。吸附法的吸附剂有金属氧化物、沸石与粘土、水滑石及其他多个种类。膜分离法主要有电渗析法、反渗透法、纳滤法等。本文介绍了近年来国内外水体除氟技术的研究进展,认为今后膜分离法及吸附法将是主要的研究方向。
In some developing countries,people suffered from high fluoride in drinking water for a long time.Defluorination of industrial wastewater is also a critical problem.The fluoride removal from water can be divided in three sections：precipitation,adsorption and membrane separation techniques.Precipitation includes chemical and physical ones.The sorbents of adsorption is took from metal oxides,zeolites,clays,LDHs and some other species.Besides,electro-dialysis,reverse osmosis and nanofiltration as membrane separation are also mentioned.The latest progress of defluorination of drinking water were reviewed.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第4期7-11,15,共6页
Technology of Water Treatment
基金
国家高技术研究发展计划(863)项目(2007AA030302)
国家重点基础研究发展规划(973)项目(2009CB623402)
海水淡化膜技术应用创新团队(2009R50045)
关键词
脱氟
沉淀
吸附
膜分离
defluorination
precipitation
adsorption
membrane separation
