活化硅酸配制和使用技术研究  

Preparation and usage of activated silicic acid

作　　者：魏月华 王素影 陈洪鹏 

机构地区：[1]天津市自来水集团有限公司凌庄水厂,天津300381

出　　处：《供水技术》2018年第1期39-41,共3页Water Technology

摘　　要：研究了活化硅酸的配制特性,确定了最佳配制方法和在不同温度下的使用比例。结果表明,活化硅酸配制浓度宜控制在1.5%,碱度应控制在1800~2200 mg/L(以CaCO_3计),活化时间控制在50 min以上。采用二次活化的混凝效果好于一次活化,且能够节约三氯化铁使用量,但混合液比例应根据水温进行调整。The preparation characteristics of activated silicic acid were investigated, and the best method and the usage ratio at different temperatures were determined. The results showed that the concentration of activated silicic acid should be controlled at 1.5%, the alkalinity at 1 800 -2 200 mg/L （calculated as CaCO3 ）, and the activation time above 50 min. The activated silicic acid after secondary activation could realize a better coagulation effect than one-time activation, save the use of ferric trichloride, but the proportion of the mixture should be adjusted according to the water temperature.

关 键 词：活化硅酸 浓度 PH 碱度 聚合状态 二次活化 温度 

分 类 号：TU991.23[建筑科学—市政工程]