| 聚硅酸铁去除溶解性有机物的机理 |
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| 引用本文： | 付英,于水利.聚硅酸铁去除溶解性有机物的机理[J].吉林大学学报(工学版),2007,37(3):709-714. |
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| 作者姓名： | 付英 于水利 |
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| 作者单位： | 1. 哈尔滨工业大学,市政环境工程学院,哈尔滨,150090;济南大学,土木建筑学院,济南,250022
2. 哈尔滨工业大学,市政环境工程学院,哈尔滨,150090 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 采用共聚工艺制备聚硅酸铁(PSF)混凝剂,研究了其对溶解性有机物(DOMs)(以腐殖酸HA为替代物)的氧化性能,并对比研究了PSF与复合铝铁(PFA)对有机物的去除性能,最后对PSF去除DOMs机理进行了初步解析。结果表明:PSF具有氧化性能,改变了HA的分子结构、表面性质以及HA/水溶液的界面性质,使吸附性能增强。不同pH值对HA、PSF、高岭土之间的络合模式具有不同的影响。PSF的混凝机理是以氧化/吸附-电中和/脱稳为前提条件,以吸附架桥为必要条件,以卷扫网捕为补充条件。
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| 关 键 词： | 水处理 硅 铁 腐殖酸(HA) 氧化 混凝机理 |
| 文章编号： | 1671-5497（2007）03-0709-06 |
| 收稿时间： | 2006-06-07 |
| 修稿时间： | 2006年6月7日 |
Mechanism of removing dissolved organic matters by poly-silicic-ferric coagulant |
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| Fu Ying,Yu Shui-li.Mechanism of removing dissolved organic matters by poly-silicic-ferric coagulant[J].Journal of Jilin University:Eng and Technol Ed,2007,37(3):709-714. |
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| Authors: | Fu Ying Yu Shui-li |
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| Abstract: | Poly-silicic-ferric(PSF) coagulant was prepared by copolymerization method.The oxidization of PSF on dissolved organic matters(DOMs)(humic acid HA as surrogate matter for DOMs) was studied.The capability to remove organic matters by PSF was investigated in comparison with that by polyferric aluminum(PFA).The mechanism of removing DOMs by PSF was analyzed primarily.Results show that PSF possesses oxidizing function;it changes the molecular structure and the surface nature of HA;it also alters the nature of the interface between HA and water solution,which leads to the improvement of the adsorption of HA.The pH value impacts the complexation mode between HA,PSF and kaolin.The oxidization/adsorption-charge neutralization/destabilization is the precondition of the coagulation mechanism of PSF,bridging is the necessary condition,and sweeping is the supplement in coagulation process. |
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| Keywords: | water treatment Si Fe humic acid(HA) oxidization coagulation mechanism |
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