Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances
The formation process of membrane fouling is complex and diverse, which is an important problem that needs to be overcome in membrane applications. In this paper, three foulant systems consisting of humic acid, humic acid plus Ca<sup>2+</sup> and humic acid plus Ca<sup>2+</sup&g...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/13/11/867 |
| _version_ | 1827639374802583552 |
|---|---|
| author | Weihao Yao Bing Wang Kaisong Zhang |
| author_facet | Weihao Yao Bing Wang Kaisong Zhang |
| author_sort | Weihao Yao |
| collection | DOAJ |
| description | The formation process of membrane fouling is complex and diverse, which is an important problem that needs to be overcome in membrane applications. In this paper, three foulant systems consisting of humic acid, humic acid plus Ca<sup>2+</sup> and humic acid plus Ca<sup>2+</sup> plus yeast were selected to compare membrane fouling processes with different aeration intensities. The aim was to establish the quantitative relationship between membrane fouling rate and shear stress, respectively, in a large-scale flat sheet MBR (FSMBR). The shear stress values at different aeration intensities were obtained using computational fluid dynamics (CFD). The membrane fouling rate during the filtration of different substances was measured by performing experiments. The comparison results showed that the membrane fouling rate varied greatly during the filtration of different substances. With the help of particle size distribution, the effect of different shear forces on floc size was further explored. Using the dual control of fouling rate and floc size, the recommended aeration intensity was 6~8 L/(m<sup>2</sup>·min). |
| first_indexed | 2024-03-09T16:37:35Z |
| format | Article |
| id | doaj.art-d22234952dbd46d99f79a5a63d67a00d |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T16:37:35Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-d22234952dbd46d99f79a5a63d67a00d2023-11-24T14:55:15ZengMDPI AGMembranes2077-03752023-11-01131186710.3390/membranes13110867Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different SubstancesWeihao Yao0Bing Wang1Kaisong Zhang2Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaCollege of Environmental Science and Engineering/Sino-Canada Joint R&D Centre for Water and Environmental Safety, Nankai University, Tianjin 300071, ChinaCollege of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, ChinaThe formation process of membrane fouling is complex and diverse, which is an important problem that needs to be overcome in membrane applications. In this paper, three foulant systems consisting of humic acid, humic acid plus Ca<sup>2+</sup> and humic acid plus Ca<sup>2+</sup> plus yeast were selected to compare membrane fouling processes with different aeration intensities. The aim was to establish the quantitative relationship between membrane fouling rate and shear stress, respectively, in a large-scale flat sheet MBR (FSMBR). The shear stress values at different aeration intensities were obtained using computational fluid dynamics (CFD). The membrane fouling rate during the filtration of different substances was measured by performing experiments. The comparison results showed that the membrane fouling rate varied greatly during the filtration of different substances. With the help of particle size distribution, the effect of different shear forces on floc size was further explored. Using the dual control of fouling rate and floc size, the recommended aeration intensity was 6~8 L/(m<sup>2</sup>·min).https://www.mdpi.com/2077-0375/13/11/867FSMBRCFDaerationshear stressfouling ratedifferent substances |
| spellingShingle | Weihao Yao Bing Wang Kaisong Zhang Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances Membranes FSMBR CFD aeration shear stress fouling rate different substances |
| title | Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances |
| title_full | Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances |
| title_fullStr | Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances |
| title_full_unstemmed | Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances |
| title_short | Comparative Study of Membrane Fouling with Aeration Shear Stress in Filtration of Different Substances |
| title_sort | comparative study of membrane fouling with aeration shear stress in filtration of different substances |
| topic | FSMBR CFD aeration shear stress fouling rate different substances |
| url | https://www.mdpi.com/2077-0375/13/11/867 |
| work_keys_str_mv | AT weihaoyao comparativestudyofmembranefoulingwithaerationshearstressinfiltrationofdifferentsubstances AT bingwang comparativestudyofmembranefoulingwithaerationshearstressinfiltrationofdifferentsubstances AT kaisongzhang comparativestudyofmembranefoulingwithaerationshearstressinfiltrationofdifferentsubstances |