| 聚合硅酸硫酸铁铝混凝剂的制备表征与混凝性能 |
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| 引用本文： | 张开仕,曾凤春,谭超,朱登磊. 聚合硅酸硫酸铁铝混凝剂的制备表征与混凝性能[J]. 化工学报, 2013, 64(8): 3070-3075. DOI: 10.3969/j.issn.0438-1157.2013.08.052 |
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| 作者姓名： | 张开仕 曾凤春 谭超 朱登磊 |
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| 作者单位： | 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 |
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| 基金项目： | 四川省重点科技发展计划项目，四川省教育厅自然科学基金项目(2010ZA064).supported by the Key Science and Technology Development Program of Sichuan Province，the Natural Science Foundation of Sichuan Province |
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| 摘 要： | 引言聚合硅酸硫酸铁铝(PAFSS)是近十年来发展起来的一种新型无机高分子混凝剂,它不但综合了聚铝、聚铁和聚硅酸混凝剂的多重优点,还克服了聚铝处理后水样残余铝浓度高、聚铁残余色度大和聚硅酸稳定性差的缺点,在废水的处理过程中可同时发生电中和、吸附架桥和网捕等多种功能,产生比单一聚铁、聚铝和聚硅酸更好的混凝效果,因而得到了国内外研究人员的广泛关注。如文献[1-4]以硅酸钠、硫酸铝和硫酸铁为原料,通过硅酸钠的酸化得到聚硅酸(PSA),通过硫酸铝和硫酸
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| 关 键 词： | 粉煤灰 废硫酸 聚合硅酸硫酸铁铝 混凝性能 |
| 收稿时间： | 2012-12-06 |
| 修稿时间： | 2013-02-16 |
Preparation and characterization of poly-aluminiumferric silicate sulfate coagulant and its coagulation property |
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| ZHANG Kaishi , ZENG Fengchun , TAN Chao , ZHU Denglei. Preparation and characterization of poly-aluminiumferric silicate sulfate coagulant and its coagulation property[J]. Journal of Chemical Industry and Engineering(China), 2013, 64(8): 3070-3075. DOI: 10.3969/j.issn.0438-1157.2013.08.052 |
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| Authors: | ZHANG Kaishi ZENG Fengchun TAN Chao ZHU Denglei |
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| Affiliation: | 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 |
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| 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). |
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| Keywords: | fly ash waste sulfuric acid poly-aluminium ferric silica sulfate coagulation property |
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