Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling
文献类型：期刊论文
| 作者 | Yu, Wenzheng ; Xu, Lei ; Qu, Jiuhui ; Graham, Nigel |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 459期号:1页码:157-168 |
| 关键词 | Coagulation Ultrafiltration PAC Crystallization Fouling |
| ISSN号 | 0376-7388 |
| 中文摘要 | Pre-coagulation by alum before ultrafiltration without (CUF) and with (CAUF) powdered activated carbon (PAC) addition was investigated to explore the influence of PAC on membrane fouling. It was found that the continuous addition of a low dosage of PAC reduced membrane fouling for operational run periods <20 days, both for reversible and for irreversible components of fouling. The presence of PAC increased the removal of dissolved organic matter (DOM), particularly proteinaceous substances, and some fractions of humic-type substances. For a longer operation time (>20 days) an increase in mainly reversible fouling was evident and was attributed to microorganism growth in the cake layer, as indicated by the enhanced concentrations of extracellular polymeric substances, such as polysaccharides and proteins. A process of crystallization of the coagulant floc in the cake layer with increasing operation time was believed to cause desorption of DOM from primary coagulation particles and a decrease in their size, and consequently a higher density of cake layer. PAC absorption of desorbed DOM within the cake layer, and residual DOM after coagulation, reduced DOM reaching the membrane surface and the extent of subsequent internal membrane fouling. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000333421600016 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9561]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yu, Wenzheng,Xu, Lei,Qu, Jiuhui,et al. Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling[J]. JOURNAL OF MEMBRANE SCIENCE,2014,459(1):157-168. |
| APA | Yu, Wenzheng,Xu, Lei,Qu, Jiuhui,&Graham, Nigel.(2014).Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling.JOURNAL OF MEMBRANE SCIENCE,459(1),157-168. |
| MLA | Yu, Wenzheng,et al."Investigation of pre-coagulation and powder activate carbon adsorption on ultrafiltration membrane fouling".JOURNAL OF MEMBRANE SCIENCE 459.1(2014):157-168. |
入库方式： OAI收割
来源：生态环境研究中心
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