Investigation of the fouling behaviors correlating to water characteristics during the ultrafiltration with ozone treatment
文献类型： 外文期刊
作者： Huang, Weiwei 1 ; Lv, Weiguang 1 ; Zhou, Wenzong 1 ; Hu, Mengliu 2 ; Dong, Bingzhi 2 ;
作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China
2.Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China
关键词： Ultrafiltration; FI; Oxidation; EEMs-PARAFAC; HPSEC
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）
ISSN： 0048-9697
年卷期： 2019 年 676 卷
页码：
收录情况： SCI
摘要： This study investigated the fouling behavior and mechanism of ozone treatment correlating to water characteristics for micro-polluted water during ultrafiltration (UF). The results indicated that pre-ozonation efficiently mitigated membrane fouling of natural organic matter (NOM). The higher ozone doses were, the more the performance transmembrane pressures (TMPs) decreased. Ozone mainly converted macro molecule organics into low molecule organics. Macro molecular biopolymers (BP) can be removed up to 35.5% with an ozone treatment of 9 mg/L, while low molecular weight building blocks of adds and humics (BB) and neutrals (LMWN) increased 725% and 14.62%, respectively, with an ozone treatment of 9 mg/L. Analysis of fluorescence excitation emission matrices (EEMs) coupled with parallel factor analysis (PARAFAC) indicated that ozone mainly removed soluble microbial organics and fulvic-like and humic-like organics but not tyrosine organics. Hydrophobic organics (HPO) were reduced with an increase of ozone doses, especially macro molecular BP and humic substances (HS), and the neutral hydrophilic fraction (N-HPI) was enhanced. Ozone treatment helped to reduce the interception of BP and HS in HPO and improved the interception of BP and HS in N-HPI. as well as BB and LMWN, in both fractions. Principal component analysis suggested that BP, as well as UV254, had high correlations with a membrane fouling index, which can be used as the fouling indicator during ozone treatment. (C) 2019 Elsevier B.V. All rights reserved.
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