Enhancing ultrafiltration performance by gravity-driven up-flow slow biofilter pre-treatment to remove natural organic matters and biopolymer foulants
文献类型：期刊论文
| 作者 | Xu, Lei; Zhou, Zheng; Graham, Nigel J. D.; Liu, Mengjie; Yu, Wenzheng
|
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 195页码:- |
| 关键词 | Ultrafiltration Biofiltration Biopolymers Microbial diversity Membrane fouling |
| ISSN号 | 0043-1354 |
| 英文摘要 | Membrane fouling by influent biopolymers, and the formation of surface biofilms, are major obstacles to the practical application of membrane technologies. Identifying reliable and sustainable pre-treatment methods for membrane filtration remains a considerable challenge and is the subject of continuing research study worldwide. Herein, the performance of a bench-scale gravity-driven up-flow slow biofilter (GUSB) as the pre-treatment for ultrafiltration to reduce membrane fouling is presented. Dissolved organic carbon (DOC) was shown efficiently removed by the GUSB (around 80%) when treating a natural water influent. More significantly, biopolymers, with molecular weight (MW) between 20 kDa and 100 kDa, were effectively removed (62.8% reduction) and this led to a lower rate of transmembrane pressure (TMP) development by the UF membrane. Microbial diversity analysis further unraveled the function of GUSB in shaping microbes to degrade biopolymers, contributing to lower accumulation and different distribution pattern of SMP on the membrane surface. Moreover, the biofilm formed on the membrane surface after the pre-treatment of GUSB was observed to have a relative porous structure compared to the control system, which can also affect the fouling development. Long-term operation of GUSB further revealed its robust performance in reducing both natural organic matters and UF fouling propensity. This study overall has demonstrated the potential advantages of applying a GUSB to enhance UF process performance by reducing biofouling and improving effluent quality. (c) 2021 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46205]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 作者单位 | 1.Imperial Coll London, Dept Civil & Environm Engn, South Kensington Campus, London SW7 2AZ, England 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Lei,Zhou, Zheng,Graham, Nigel J. D.,et al. Enhancing ultrafiltration performance by gravity-driven up-flow slow biofilter pre-treatment to remove natural organic matters and biopolymer foulants[J]. WATER RESEARCH,2021,195:-. |
| APA | Xu, Lei,Zhou, Zheng,Graham, Nigel J. D.,Liu, Mengjie,&Yu, Wenzheng.(2021).Enhancing ultrafiltration performance by gravity-driven up-flow slow biofilter pre-treatment to remove natural organic matters and biopolymer foulants.WATER RESEARCH,195,-. |
| MLA | Xu, Lei,et al."Enhancing ultrafiltration performance by gravity-driven up-flow slow biofilter pre-treatment to remove natural organic matters and biopolymer foulants".WATER RESEARCH 195(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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