摘要
介绍了含氟废水处理的几种常见方法——化学沉淀法、混凝沉降法、吸附法、膜分离法和生化法等。认为化学沉淀法联合使用铝盐、镁盐、磷酸盐等,可获得比单纯用钙盐更好的除氟效果;采用聚丙烯酰胺类则不易产生水体造成新的污染,活性氧化镁、稀土金属氧化物及羟基磷灰石等新型吸附剂的使用可提高吸附法的处理效率,膜分离方法适用于含有较多杂质的含氟废水处理,但工业化应用还有一定难度;对含氟废水中组成成分的剖析研究是决定含氟废水处理方法的重要环节。
This paper introduced several treatment methods of fluoride waste water-chemical precipitation method,coagulation sedimentation method,adsorption method,membrane separation method and biochemical method,etc.Chemical precipitation method joint with aluminum salt,magnesium salt,phosphate,etc could obtain better defluorination effect than only using calcium salt;the polyacrylamide type was not easy to create water causing new pollution;the use of new type adsorbent such as active magnesium oxide,rare earth metal oxide and hydroxy apatite could improve the adsorption method treatment efficiency;membrane separation method suit for fluoride wastewater containing many impurities,but it had difficult in industrial application;The fluoride wastewater composition analysis is an important link to chose treatment method.
出处
《化工生产与技术》
CAS
2012年第6期21-24,8,共4页
Chemical Production and Technology
基金
衢州学院院级重点项目(QY07ZD04)
衢州学院校基金(KZY1101)
关键词
含氟废水
处理
排放标准
fluoride wastewater
treatment
emission standard
