摘要
以水中氟硅酸的去除为研究对象,首先对氟离子选择电极法测量氟硅酸浓度的适用范围进行了分析,并在此基础上探讨了氟硅酸与熟石灰在不同反应条件下的动力学特征,同时给出了熟石灰及聚合氯化铝加入量对于脱氟效果的影响规律,并通过XRD表征证明了溶液中的氟是以氟化钙的形式析出。
In this paper,the removal of fluorosilicic acid in water is taken as an investigation object,and the available range of fluorosilicic acid concentration is determined by fluoride ion selective electrode method.The reactive kinetic characteristics of fluoride and slaked lime under different reaction conditions are discussed,furthermore,the influences of the added amount of slaked lime and poly aluminium chloride（PAC）on defluorination effect are studied.Finally,the XRD analysis shows that the CaF2 precipitation occurres during lime treatment.
出处
《山西化工》
2014年第4期72-75,共4页
Shanxi Chemical Industry
关键词
氟硅酸
氟离子选择电极法
化学沉淀法
fluorosilicic acid
fluoride ion selective electrode method
lime treatment
