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天然有机物对PVDF超滤膜的污染行为及AFM表征

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王磊, 张静怡, 王旭东, 王志盈, 苗瑞, 黄丹曦. 天然有机物对PVDF超滤膜的污染行为及AFM表征[J]. 环境工程学报, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
引用本文: 王磊, 张静怡, 王旭东, 王志盈, 苗瑞, 黄丹曦. 天然有机物对PVDF超滤膜的污染行为及AFM表征[J]. 环境工程学报, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
shu
Wang Lei, Zhang Jingyi, Wang Xudong, Wang Zhiying, Miao Rui, Huang Danxi. AFM analysis and fouling behavior of NOM on PVDF UF membrane[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
Citation: Wang Lei, Zhang Jingyi, Wang Xudong, Wang Zhiying, Miao Rui, Huang Danxi. AFM analysis and fouling behavior of NOM on PVDF UF membrane[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
shu

天然有机物对PVDF超滤膜的污染行为及AFM表征

  • 1.

    西安建筑科技大学环境与市政工程学院, 西安 710055

  • 基金项目:

    国家自然科学基金资助项目(51178378,51278408)

    陕西省科技统筹创新工程计划项目(2012KTCL03-06,2013KTCL03-16)

    西安建筑科技大学创新团队计划

  • 中图分类号: X703

AFM analysis and fouling behavior of NOM on PVDF UF membrane

  • 1.

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

  • Fund Project:

  • 摘要: 为了进一步研究各类型污染物对自制PVDF超滤膜的污染机制,分别采用DAX-8,XAD-4型吸附树脂将西安市灞河水分为亲水性、强疏水性及弱疏水性组分,考察了天然有机物(NOM)对膜通量衰减的影响、污染层的表面粗糙度和结构、各类型污染物与膜之间黏附力。实验结果表明:(1)3种组分对PVDF膜的污染程度为亲水性组分> 强疏水性组分> 弱疏水性组分;(2)污染后膜表面粗糙度大于新膜表面粗糙度,膜表面污染层粗糙度越大,膜通量越容易恢复;(3)过滤初期,膜与污染物之间的力占主导作用,且亲水性污染物-PVDF膜之间的力> 强疏水性污染物-膜> 弱疏水性污染物-膜;(4)过滤后期,污染物与污染物之间的力占主导作用,且亲水性污染物之间力> 强疏水性污染物> 弱疏水性污染物。
    Abstract: Using DAX-8 and XAD-4 resins, water from the Bahe River was isolated into three fractions:hydrophilic, strongly hydrophobic, and weakly hydrophobic. Experiments were conducted on filtration, surface roughness, and structure of the fouling layer, and on the adhesive force between the three types of pollutants and membrane, to investigate and analyze the effect of various types of pollutants on a self-made polyvinylidene fluoride (PVDF) ultrafiltration membrane. The experimental results suggest that:(1) The degree of fouling from the three types of components on the PVDF membrane varied in the order of hydrophilic> strongly hydrophobic> weakly hydrophobic. (2) A polluted membrane has greater surface roughness than the original one. The greater the surface roughness of the membrane-fouling layer, the easier it is for the flux to recover. (3) The force between the membrane and pollutants plays a major role in early filtration processes. The importance of the effects from the three components is hydrophilic component> strongly hydrophobic component> weakly hydrophobic component. (4) The force between the pollutants plays a primary role in late filtration processes. The importance of the effects from the three components is hydrophilic component> strongly hydrophobic component> weakly hydrophobic component.
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  • [1] Yuliwati E., Ismail A. F., Matsuura T., et al. Effect of modified PVDF hollow fiber submerged ultrafiltration membrane for refinery wastewater treatment. Desalination, 2011, 283:214-220
    [2] Gao Wei, Liang Heng, Ma Jun, et al. Membrane fouling control in ultrafiltration technology for drinking water production:A review. Desalination, 2011, 272(1-3):1-8
    [3] Rogella F. Cost reductions will make MBR realistic even for large plants. International Desalination and Water Reuse Quarterly, 2002, 11(4):9-10
    [4] Huang Haiou, Lee N., Young T., et al. Natural organic matter fouling of low-pressure, hollow-fiber membranes:Effects of NOM source and hydrodynamic conditions. Water Research, 2007, 41(17):3823-3832
    [5] Yamamura H., Kimura K., Watanabe Y. Mechanism involved in the evolution of physically irreversible fouling in microfiltration and ultrafiltration membranes used for drinking water treatment. Environmental Science & Technology, 2007, 41(19):6789-6794
    [6] Yang Jixiang, Shi Wenxin, Yu Shuili, et al. Influence of DOC on fouling of a PVDF ultrafiltration membrane modified by nano-sized alumina. Desalination, 2009, 239(1-3):29-37
    [7] Fan Lihua, Harris J. L., Roddick F. A., et al. Influence of the characteristics of natural organic matter on the fouling of microfiltration membranes. Water Research, 2001, 35(18):4455-4463
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    [10] Jayalakshmia A., Rajeshb S., Kimc I. C., et al. Poly (isophthalamide) based graft copolymer for the modification of cellulose acetate ultrafiltration membranes and a fouling study by AFM imaging. Journal of Membrane Science, 2014, 465:117-128
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  • 收稿日期:  2014-12-11
  • 刊出日期:  2016-03-18
王磊, 张静怡, 王旭东, 王志盈, 苗瑞, 黄丹曦. 天然有机物对PVDF超滤膜的污染行为及AFM表征[J]. 环境工程学报, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
引用本文: 王磊, 张静怡, 王旭东, 王志盈, 苗瑞, 黄丹曦. 天然有机物对PVDF超滤膜的污染行为及AFM表征[J]. 环境工程学报, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
shu
Wang Lei, Zhang Jingyi, Wang Xudong, Wang Zhiying, Miao Rui, Huang Danxi. AFM analysis and fouling behavior of NOM on PVDF UF membrane[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
Citation: Wang Lei, Zhang Jingyi, Wang Xudong, Wang Zhiying, Miao Rui, Huang Danxi. AFM analysis and fouling behavior of NOM on PVDF UF membrane[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1121-1125. doi: 10.12030/j.cjee.20160319
shu

天然有机物对PVDF超滤膜的污染行为及AFM表征

  • 1. 西安建筑科技大学环境与市政工程学院, 西安 710055
  • 收稿日期:  2014-12-11
基金项目:

国家自然科学基金资助项目(51178378,51278408)

陕西省科技统筹创新工程计划项目(2012KTCL03-06,2013KTCL03-16)

西安建筑科技大学创新团队计划

摘要: 为了进一步研究各类型污染物对自制PVDF超滤膜的污染机制,分别采用DAX-8,XAD-4型吸附树脂将西安市灞河水分为亲水性、强疏水性及弱疏水性组分,考察了天然有机物(NOM)对膜通量衰减的影响、污染层的表面粗糙度和结构、各类型污染物与膜之间黏附力。实验结果表明:(1)3种组分对PVDF膜的污染程度为亲水性组分> 强疏水性组分> 弱疏水性组分;(2)污染后膜表面粗糙度大于新膜表面粗糙度,膜表面污染层粗糙度越大,膜通量越容易恢复;(3)过滤初期,膜与污染物之间的力占主导作用,且亲水性污染物-PVDF膜之间的力> 强疏水性污染物-膜> 弱疏水性污染物-膜;(4)过滤后期,污染物与污染物之间的力占主导作用,且亲水性污染物之间力> 强疏水性污染物> 弱疏水性污染物。

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