摘要
就聚合铝，ＣＦ－１和ＰＣ８５－３除氟的适宜条件，如ｐＨ，陈化作用，搅拌等进行了较详细的比较。聚合氯化铝除氟的最佳ｐＨ为６—７；水温在１０—３０℃除氟效果基本相近；搅拌时间以１—３ｍｉｎ为宜；沉淀静置１０—１５ｍｉｎ能达到除氟要求。并对活性氧化铝，骨炭和ＵＲ－３７００螯合树脂除氟的平衡容量，水的硬度影响等进行了试验。结果表明，聚合铝，ＣＦ－１和ＰＣ８５－３去除饮水中的过量氟，可达到饮用要求，但其应用受限制。活性氧化铝，骨炭是比较有效的除氟滤料，活性氧化铝平衡吸氟量为０．８９—１．７５ｍｇ／ｇ，除氟效率与ｐＨ、原水含氟量、盐度和硬度有关。
he optimum conditions for polyaluminum species,CF-1 and PC85-3 to remove fluorides from drinkingwater,such as pH value,ageing and agitation,werecompared in detail and activated alumina,bonecarbon and UR-3700 chelate resin were tested fortheir equilibrium capacity of fluoride removal,theeffect of water hardness,etc.The results show thatpolyaluminum species,CF-1 and PC85-3 removedthe excessive fluorides from drinking water to anacceptable level for drinking use but had limited applications.Activated alumina and bone carbon were more effective filters for removing fluorides from drinking water.The optimum pH values for thefluoride removal by polyaluminum species were 6-7.The eficiency of fluoride removal was the same at water temperatures ranged from 10-30℃.Thestirring time of 1-3min and agitation time of 1015 min were satisfatory for fluoride removal fromdrinking water.The equilibrium capacity of fluorideremoval for activated alumina was 0.891.75mg/g.The eficiency of fluoride removal was related topH,concentration of fluoride,salinity and handness.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1994年第4期19-22,共4页
Environmental Science
关键词
除氟
聚合铝
活性氧化铝
骨炭
饮水
fluoride removal,polyaluminum,activated alumina,bone carbon,drinking water.
