Enhanced ultrafiltration membrane fouling alleviation by module rotation with Fe-based flocs
文献类型：期刊论文
| 作者 | Miao, Rui; Qiu, Kaipei; Wang, Bodong; Wei, Xiping; Zuo, Jiaqi; Ma, Baiwen |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2021 |
| 卷号 | 9期号:5页码:- |
| 关键词 | Ultrafiltration Flocs Integrated progress Rotation of module Fouling reduction |
| 英文摘要 | The modules of ultrafiltration (UF) membrane always occupy a fixed position during filtration. This results in a gradual aggravation of membrane fouling because of the continuous pollutants deposition. However, it is known that the cake layer is composed of loosely hydrolyzed flocs. Therefore, in this study, the rotation concept of membrane-module was investigated in conjunction with the integrated floc (Fe-based)-UF process. We found that the Fe-based flocs can be easily peeled off the membrane surface during rotation, and the UF membrane fouling was alleviated, particularly with spiral module rotation because of the strong shearing force induced. The fouling behavior after spiral module rotation was similar for different floc dosages because of the looseness cake layer formed. The applied computational fluid dynamics model showed that a greater spiral rotation height corresponded to a larger water velocity distribution and stronger shearing force in the membrane tank, and this resulted in a reduction in the fouling degree due to the thinner cake layer formed. Moreover, in comparison with alkaline conditions, a slightly more severe fouling degree was observed under acidic conditions because of the induced denser cake layer with smaller Fe-based floc sizes; however, a significantly higher humic-acid removal efficiency was observed. In addition, UF membrane performed well with river water samples taken from the South-to-North water diversion project in China (Beijing), thereby indicating the rotating module potential application in membrane-based drinking water treatment. |
| WOS研究方向 | Engineering, Environmental ; Engineering, Chemical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46203]  |
| 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.East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China 2.Xian Univ Architecture & Technol, Res Inst Membrane Separat Technol Shaanxi Prov, Key Lab Membrane Separat Shaanxi Prov,Sch Environ, Key Lab Northwest Water Resources,Key Lab Environ, Yan Ta Rd 13, Xian 710055, Peoples R China 3.Univ Duisburg Essen, Lehrstuhl Tech Chem 2, D-45117 Essen, Germany 4.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 | Miao, Rui,Qiu, Kaipei,Wang, Bodong,et al. Enhanced ultrafiltration membrane fouling alleviation by module rotation with Fe-based flocs[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(5):-. |
| APA | Miao, Rui,Qiu, Kaipei,Wang, Bodong,Wei, Xiping,Zuo, Jiaqi,&Ma, Baiwen.(2021).Enhanced ultrafiltration membrane fouling alleviation by module rotation with Fe-based flocs.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(5),-. |
| MLA | Miao, Rui,et al."Enhanced ultrafiltration membrane fouling alleviation by module rotation with Fe-based flocs".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.5(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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