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Membrane fouling in an integrated adsorption–UF system: effects of NOM and adsorbent properties
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2019-11-04 , DOI: 10.1039/c9ew00843h Kai Li 1, 2, 3, 4, 5 , Shu Li 1, 2, 3, 4, 5 , Ce Sun 1, 2, 3, 4, 5 , Tinglin Huang 1, 2, 3, 4, 5 , Guibai Li 6, 7, 8, 9 , Heng Liang 6, 7, 8, 9
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2019-11-04 , DOI: 10.1039/c9ew00843h Kai Li 1, 2, 3, 4, 5 , Shu Li 1, 2, 3, 4, 5 , Ce Sun 1, 2, 3, 4, 5 , Tinglin Huang 1, 2, 3, 4, 5 , Guibai Li 6, 7, 8, 9 , Heng Liang 6, 7, 8, 9
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The integration of adsorption with ultrafiltration (UF) is a promising technology for the production of high quality drinking water, but it is still under debate whether the addition of an adsorbent can mitigate membrane fouling. This study was conducted to investigate the impact of properties of the adsorbent and natural organic matter (NOM) in feed water on membrane fouling in an integrated adsorption–UF system. A continuous-flow hollow fiber UF set-up with periodic backwash and aeration was used to imitate the operation of full-scale integrated adsorption–UF systems. Two types of adsorbents, commercial powdered activated carbon (PAC) and homemade mesoporous adsorbent resin (MAR), were examined. As for Songhua River water dominated by allochthonous NOM, membrane fouling of the PAC/UF system was increased by 39.5% compared with that of UF alone, whereas the addition of MAR mitigated membrane fouling by 66.4%. For the synthetic water composed of algal organic matter (AOM), membrane fouling of PAC/UF and MAR/UF systems was reduced by 40.7% and 83.3%, respectively. The results suggested that deposition of adsorbent particles and fouling resistance of the cake layer were determined by the hydrophobicity and molecular weight distribution of NOM as well as the properties of adsorbents. This study highlights the significance of adsorbent selection for the integrated adsorption–UF process according to the source and properties of NOM.
中文翻译：
集成吸附-UF系统中的膜污染：NOM和吸附剂性能的影响
吸附与超滤（UF）的集成是生产高质量饮用水的一种有前途的技术，但是否添加吸附剂可以减轻膜污染仍在争论中。这项研究的目的是研究给水中吸附剂和天然有机物（NOM）的特性对集成的UF系统中膜污染的影响。具有连续反冲洗和曝气的连续流中空纤维超滤装置被用来模拟全尺寸集成吸附超滤系统的操作。检查了两种类型的吸附剂，即市售粉状活性炭（PAC）和自制中孔吸附树脂（MAR）。对于以异源NOM为主的松花江水，PAC / UF系统的膜污染比单独的UF增加39.5％，而添加MAR则可减少66.4％的膜污染。对于由藻类有机物（AOM）组成的合成水，PAC / UF和MAR / UF系统的膜污染分别减少了40.7％和83.3％。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。
更新日期：2019-11-04
中文翻译：
集成吸附-UF系统中的膜污染：NOM和吸附剂性能的影响
吸附与超滤（UF）的集成是生产高质量饮用水的一种有前途的技术，但是否添加吸附剂可以减轻膜污染仍在争论中。这项研究的目的是研究给水中吸附剂和天然有机物（NOM）的特性对集成的UF系统中膜污染的影响。具有连续反冲洗和曝气的连续流中空纤维超滤装置被用来模拟全尺寸集成吸附超滤系统的操作。检查了两种类型的吸附剂，即市售粉状活性炭（PAC）和自制中孔吸附树脂（MAR）。对于以异源NOM为主的松花江水，PAC / UF系统的膜污染比单独的UF增加39.5％，而添加MAR则可减少66.4％的膜污染。对于由藻类有机物（AOM）组成的合成水，PAC / UF和MAR / UF系统的膜污染分别减少了40.7％和83.3％。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。结果表明，吸附剂颗粒的沉积和滤饼层的防污性取决于NOM的疏水性和分子量分布以及吸附剂的性能。这项研究强调了根据NOM的来源和性质，选择吸附剂对于集成吸附-UF工艺的重要性。
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