无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (2): 4-.

• 论文 • 上一篇    下一篇

聚硅酸硫酸铝铁的制备和应用研究进展

郑定成,袁斌,蒋铭明,戴琴,牛艳   

  1. 广东工业大学环境科学与工程学院,广东广州 510006
  • 发布日期:2011-04-19

Progress in preparation and application of polymeric ferric aluminium silicate sulfate

Zheng Dingcheng,Yuan Bin,Jiang Mingming,Dai Qin,Niu Yan   

  1. School of Environmental Science and Engineering,Guangdong University of Technology,Guangzhou 510006,China
  • Published:2011-04-19

摘要: 介绍了混凝剂聚硅酸硫酸铝铁(PAFSS)的制备方法和应用研究的新进展,讨论了PAFSS混凝剂的混凝作用机理及其稳定性。指出制备良好的聚硅酸硫酸铝铁混凝剂,关键因素是控制Al/ Fe/ Si的物质的量比、硅酸浓度、温度、pH和铝盐、铁盐的加入顺序。通过调节pH、控制二氧化硅浓度、向PAFSS中投加无水乙醇、正丁醇、丙酮等稳定剂,可以有效延缓PFASS混凝剂的凝胶速度,提高了其稳定性。此外,针对目前聚硅酸盐在应用中存在的问题,提出了今后的研究方向。

关键词: 聚硅酸, 聚硅酸铁铝, 混凝剂, 硫酸

Abstract: New research progress in preparation and application of polymeric ferric aluminium silicate sulfate (PAFSS) coagulant was introduced,and the coagulation mechanism and stability of PAFSS were also discussed. It was pointed that the key factor of preparing a good PAFSS coagulant was the control of amount-substance ratio of Al/Fe/Si,silicic acid concentration,temperature,pH,and adding sequence of aluminium and ferric salts.It can effectively delay the PAFSS coagulant′s gelation speed and improve its stability with adjusting pH,controling the concentration of SiO2,adding the absolute ethanol,normal butanol,acetone,and other stabilizers in PAFSS.In addition,in allusion to the present problems in application of polysilicates,the research direction in future was proposed.

Key words: polysilicic acid, polysilicic ferric aluminium, coagulant, sulfuric acid

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