CIESC Journal ›› 2013, Vol. 64 ›› Issue (8): 3070-3075.DOI: 10.3969/j.issn.0438-1157.2013.08.052

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Preparation and characterization of poly-aluminiumferric silicate sulfate coagulant and its coagulation property

ZHANG Kaishi1, ZENG Fengchun2, TAN Chao1, ZHU Denglei1   

  1. 1. School of Chemistry and Chemical Engineering, Yibin University, Yibin 644000, Sichuan, China;
    2. School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China
  • Received:2012-12-06 Revised:2013-02-16 Online:2013-08-05 Published:2013-08-05
  • Supported by:

    supported by the Key Science and Technology Development Program of Sichuan Province(2012JYZ008)and the Natural Science Foundation of Sichuan Province(2010ZA064).

聚合硅酸硫酸铁铝混凝剂的制备表征与混凝性能

张开仕1, 曾凤春2, 谭超1, 朱登磊1   

  1. 1. 宜宾学院化学与化工学院, 四川 宜宾 644000;
    2. 四川理工学院化学与制药工程学院, 四川 自贡 643000
  • 通讯作者: 张开仕(1959- ),男,教授。
  • 作者简介:张开仕(1959- ),男,教授。
  • 基金资助:

    四川省重点科技发展计划项目(2012JYZ008);四川省教育厅自然科学基金项目(2010ZA064)。

Abstract: A new type of inorganic polymer coagulant,poly-aluminum ferric silicate sulfate(PAFSS),was prepared by alkali leaching,acidic leaching,oxidation,and polymerization.Fly ash,crap iron and waste sulfuric acid were utilized as raw materials.The structure,morphology and coagulation property of the sample were characterized by XRD,TEM,microelectrophoresis,ultrafiltration and coagulation experiments.The results showed that the multi-core PAFSS sample,which possessed larger amounts of Al-O-Si and Fe-O-Si,was synthesized from the interaction between Fe3+,Al3+,their hydrating polymers,SO42- and poly-silicic acid.The polymer displayed branch-like structure with higher polymerization degree,and larger molecular weight.The coagulation property of samples was excellent when the Si/(Fe+Al)ratio was equal to 0.06-0.10.pH adaptability was much better than that of commercial polymerized ferric sulfate(PFS),polymerized aluminum chloride(PAC)and poly-aluminum ferric sulfate(PAFS).

Key words: fly ash, waste sulfuric acid, poly-aluminium ferric silica sulfate, coagulation property

关键词: 粉煤灰, 废硫酸, 聚合硅酸硫酸铁铝, 混凝性能

CLC Number: