Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater
Osmotic membrane bioreactors (OMBR) have gained increasing interest in wastewater treatment and reclamation due to their high product water quality and fouling resistance. However, high energy consumption (mostly by draw solution recovery) restricted the wider application of OMBR. Herein, we propose...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/164193 |
| _version_ | 1824454889238953984 |
|---|---|
| author | Liu, Shuyue Song, Weilong Meng, Manli Xie, Ming She, Qianhong Zhao, Pin Wang, Xinhua |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Liu, Shuyue Song, Weilong Meng, Manli Xie, Ming She, Qianhong Zhao, Pin Wang, Xinhua |
| author_sort | Liu, Shuyue |
| collection | NTU |
| description | Osmotic membrane bioreactors (OMBR) have gained increasing interest in wastewater treatment and reclamation due to their high product water quality and fouling resistance. However, high energy consumption (mostly by draw solution recovery) restricted the wider application of OMBR. Herein, we propose a novel pressure retarded osmosis membrane bioreactor (PRO-MBR) for improving the economic feasibility. In comparison with conventional FO-MBR, PRO-MBR exhibited similar excellent contaminants removal performance and comparable water flux. More importantly, a considerable amount of energy can be recovered by PRO-MBR (4.1 kWh/100 m2·d), as a result of which, 10.02% of the specific energy consumption (SEC) for water recovery was reduced as compared with FO-MBR (from 1.42 kWh/m3 to 1.28 kWh/m3). Membrane orientation largely determined the performance of PRO-MBR, higher power density was achieved in AL-DS orientation (peak value of 3.4 W/m2) than that in AL-FS orientation (peak value of 1.4 W/m2). However, PRO-MBR suffered more severe and complex membrane fouling when operated in AL-DS orientation, because the porous support layer was facing sludge mixed liquor. Further investigation revealed fouling was mostly reversible for PRO-MBR, it exhibited similar flux recoverability (92.4%) to that in FO-MBR (95.1%) after osmotic backwash. Nevertheless, flux decline due to membrane fouling is still a restricting factor to power generation of PRO-MBR, its power density was decreased by 38.2% in the first 60 min due to the formation of fouling. Overall, in perspective of technoeconomic feasibility, the PRO-MBR demonstrates better potential than FO-MBR in wastewater treatment and reclamation and deserves more research attention in the future. |
| first_indexed | 2025-02-19T03:29:29Z |
| format | Journal Article |
| id | ntu-10356/164193 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:29:29Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1641932023-01-09T04:25:28Z Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater Liu, Shuyue Song, Weilong Meng, Manli Xie, Ming She, Qianhong Zhao, Pin Wang, Xinhua School of Civil and Environmental Engineering Engineering::Environmental engineering Pressure Retarded Osmosis Forward Osmosis Osmotic membrane bioreactors (OMBR) have gained increasing interest in wastewater treatment and reclamation due to their high product water quality and fouling resistance. However, high energy consumption (mostly by draw solution recovery) restricted the wider application of OMBR. Herein, we propose a novel pressure retarded osmosis membrane bioreactor (PRO-MBR) for improving the economic feasibility. In comparison with conventional FO-MBR, PRO-MBR exhibited similar excellent contaminants removal performance and comparable water flux. More importantly, a considerable amount of energy can be recovered by PRO-MBR (4.1 kWh/100 m2·d), as a result of which, 10.02% of the specific energy consumption (SEC) for water recovery was reduced as compared with FO-MBR (from 1.42 kWh/m3 to 1.28 kWh/m3). Membrane orientation largely determined the performance of PRO-MBR, higher power density was achieved in AL-DS orientation (peak value of 3.4 W/m2) than that in AL-FS orientation (peak value of 1.4 W/m2). However, PRO-MBR suffered more severe and complex membrane fouling when operated in AL-DS orientation, because the porous support layer was facing sludge mixed liquor. Further investigation revealed fouling was mostly reversible for PRO-MBR, it exhibited similar flux recoverability (92.4%) to that in FO-MBR (95.1%) after osmotic backwash. Nevertheless, flux decline due to membrane fouling is still a restricting factor to power generation of PRO-MBR, its power density was decreased by 38.2% in the first 60 min due to the formation of fouling. Overall, in perspective of technoeconomic feasibility, the PRO-MBR demonstrates better potential than FO-MBR in wastewater treatment and reclamation and deserves more research attention in the future. This work was supported by the National Natural Science Foundation of China [grant number 51978312]; the Six Major Talent Peaks of Jiangsu Province [grant number 2018-JNHB-014]; and the Program to Cultivate Middle-aged and Young Science Leaders of Colleges and Universities of Jiangsu Province. 2023-01-09T04:25:28Z 2023-01-09T04:25:28Z 2022 Journal Article Liu, S., Song, W., Meng, M., Xie, M., She, Q., Zhao, P. & Wang, X. (2022). Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater. Science of the Total Environment, 826, 154048-. https://dx.doi.org/10.1016/j.scitotenv.2022.154048 0048-9697 https://hdl.handle.net/10356/164193 10.1016/j.scitotenv.2022.154048 35202696 2-s2.0-85125568826 826 154048 en Science of the Total Environment © 2022 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Pressure Retarded Osmosis Forward Osmosis Liu, Shuyue Song, Weilong Meng, Manli Xie, Ming She, Qianhong Zhao, Pin Wang, Xinhua Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title | Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title_full | Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title_fullStr | Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title_full_unstemmed | Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title_short | Engineering pressure retarded osmosis membrane bioreactor (PRO-MBR) for simultaneous water and energy recovery from municipal wastewater |
| title_sort | engineering pressure retarded osmosis membrane bioreactor pro mbr for simultaneous water and energy recovery from municipal wastewater |
| topic | Engineering::Environmental engineering Pressure Retarded Osmosis Forward Osmosis |
| url | https://hdl.handle.net/10356/164193 |
| work_keys_str_mv | AT liushuyue engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT songweilong engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT mengmanli engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT xieming engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT sheqianhong engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT zhaopin engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater AT wangxinhua engineeringpressureretardedosmosismembranebioreactorprombrforsimultaneouswaterandenergyrecoveryfrommunicipalwastewater |