| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10133410 | Bioresource Technology | 2018 | 8 Pages |
Abstract
In this study the effect of different fouling stages of hollow fiber membranes on effective backwashing length in MBR has been investigated. Computational fluid dynamics (CFD) is imported to simulate backwashing process. A multi-physics coupling model for free porous media flow, convective mass transfer and diluted species transport was established. The laser bijection sensors (LBS) were imported to monitor the backwashing solution position inside fiber lumen. Simulation results indicated that membrane fouling degree could change the velocity of backwash solution inside fiber lumen and make a further effect on effective backwash length. The signal variations of LBS are in accordance with the simulation results. The backwashing process can only play an active role when the filtration pressure is below the critical TMP. It can be concluded that backwash duration in industrial applications need to be set based on changes in TMP.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Zhao Cui, Jie Wang, Hongwei Zhang, Huu Hao Ngo, Hui Jia, Wenshan Guo, Fei Gao, Guang Yang, Dejun Kang,