Effects of combined ozone and PAC pretreatment on ultrafiltration membrane fouling control and mechanisms
文献类型： 外文期刊
作者： Huang, Weiwei 1 ; Wang, Lin 3 ; Zhou, Wenzong 1 ; Lv, Weiguang 1 ; Hu, Mengliu 2 ; Chu, Huaqiang 2 ; Dong, Bingzhi 2 ;
作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China
2.Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China
3.Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Peoples R China
关键词： Ultrafiltration;Ozone;Powered activated carbon;Peak-fitting;Parallel factor analysis
期刊名称：JOURNAL OF MEMBRANE SCIENCE （ 影响因子：8.742； 五年影响因子：8.411 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： This work investigates the effects of combined ozone and powered activated carbon (PAC) pretreatment on ultrafiltration (UF) performance. High performance size exclusion chromatography (HPSEC) combined with peak-fitting prediction and fluorescence excitation-emission matrix spectroscopy coupled with parallel factor analysis (EEM-PARAFAC) were used to analyze membrane fouling and organic removal. We conclude that combined ozone and PAC pretreatment can significantly inhibit an increase in transmembrane pressure (TMP) whereby ozone plays a predominant role in delaying TMP increases. Ozone and activated carbon can greatly improve the removal efficiency of organic matter, especially that of macromolecular biopolymers, medium molecules of humic-like substances and small molecular acids and neutrals; however, the removal efficiency of aromatic proteins containing tyrosine is limited. Macromolecular biopolymers show high correlations with TMP/TMP0, followed by that of building blocks of low molecular acids and neutrals, while humic-like substances have a minor influence on UF membrane fouling. Fluorescence EEM is not valid for use as an indicator of membrane fouling after combined ozone and PAC treatment according to this study.
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