Insight into the influence of humic acid and sodium alginate fractions on membrane fouling in coagulation-ultrafiltration combined system
文献类型：期刊论文
| 作者 | Zhao, Changwei; Song, Tingting; Yu, Yang; Qu, Laiye; Cheng, Jinxing; Zhu, Wenkai; Wang, Qingbo; Li, Pei; Tang, Wenjing |
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2020-12 |
| 卷号 | 191页码:1-5 |
| ISSN号 | 0013-9351 |
| 关键词 | Coagulation Ultrafiltration Water control technology Membrane fouling Sodium alginate |
| 英文摘要 | Membrane fouling has become the one of main obstacles for the widespread application of membrane technology in water treatment processes. Coagulation as pretreatment is proven to be effective for the alleviation of membrane fouling. In this study, the influence of humic acid (HA)/sodium alginate (SA) fractions in the structure and resistance of cake layer on the membrane surface was investigated. The presence of SA at an appropriate fraction could facilitate the formation of large and loosely branched flocs and thereby form a more permeable cake layer on the membrane surface due to good bridging and charge neutralization abilities of SA molecules. The particle image velocimetry (PIV) technique was employed for monitoring the dynamic formation process of cake layer under different HA/SA fractions. The cake layer with a higher thickness was observed to be rapidly formed on the membrane surface at the presence of SA in water. According to the theoretical analysis, the membrane fouling in coagulation-ultrafiltration (UF) combined system demonstrated to be highly dependent on the size and intra-porosity of flocs. The fractal dimension of flocs might have an impact on the resistance of cake layer through affecting the porosity of aggregated flocs. The SA molecules could be used as the coagulant aid for effective alleviation of membrane fouling and the improvement of filtration performance in a coagulation-UF combined system. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44349]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Changwei,Song, Tingting,Yu, Yang,et al. Insight into the influence of humic acid and sodium alginate fractions on membrane fouling in coagulation-ultrafiltration combined system[J]. ENVIRONMENTAL RESEARCH,2020,191:1-5. |
| APA | Zhao, Changwei.,Song, Tingting.,Yu, Yang.,Qu, Laiye.,Cheng, Jinxing.,...&Tang, Wenjing.(2020).Insight into the influence of humic acid and sodium alginate fractions on membrane fouling in coagulation-ultrafiltration combined system.ENVIRONMENTAL RESEARCH,191,1-5. |
| MLA | Zhao, Changwei,et al."Insight into the influence of humic acid and sodium alginate fractions on membrane fouling in coagulation-ultrafiltration combined system".ENVIRONMENTAL RESEARCH 191(2020):1-5. |
入库方式： OAI收割
来源：生态环境研究中心
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