Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse
Filtration backwashing is necessary for the effective operation of membrane modules, and intermittent aeration helps to remove nutrients, which can save energy and effectively control the occurrence of membrane contamination. In this study, membrane contamination was controlled using an MBR in inter...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/15/23/4144 |
| _version_ | 1797399525340479488 |
|---|---|
| author | Ruoting Gao Ronglin Sun Chunfang Zhang Wenjie Zhang |
| author_facet | Ruoting Gao Ronglin Sun Chunfang Zhang Wenjie Zhang |
| author_sort | Ruoting Gao |
| collection | DOAJ |
| description | Filtration backwashing is necessary for the effective operation of membrane modules, and intermittent aeration helps to remove nutrients, which can save energy and effectively control the occurrence of membrane contamination. In this study, membrane contamination was controlled using an MBR in intermittent aeration operation mode and a filtration backwash cycle; difficult organic matter and nitrogen (COD and NH<sub>4</sub><sup>+</sup>-N) were used as the main contamination indicators for this study; and the main membrane contamination components, extracellular polymers (EPs), and soluble microbial products (SMPs) were detected. The results show that the average removal of COD and NH<sub>4</sub><sup>+</sup>-N could reach 86.45% and 92.47%, respectively, with a 2.0 day intermittent aeration time and 9/1 min filtration backwash cycle mode, and it also helped to reduce the membrane contamination, as shown by a decrease of 11.87% in bound EPs (EPS<sub>Bound</sub>) and an increase of only 5.32% in SMPs. Microbiological analyses revealed that Proteobacteria and Acinetobacter, as dominant bacteria (50.90%), were the main causes of membrane contamination. |
| first_indexed | 2024-03-09T01:40:31Z |
| format | Article |
| id | doaj.art-e0818e5ab250493a88d06484ba3517c8 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T01:40:31Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-e0818e5ab250493a88d06484ba3517c82023-12-08T15:28:39ZengMDPI AGWater2073-44412023-11-011523414410.3390/w15234144Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater ReuseRuoting Gao0Ronglin Sun1Chunfang Zhang2Wenjie Zhang3Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, ChinaInstitute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, ChinaFiltration backwashing is necessary for the effective operation of membrane modules, and intermittent aeration helps to remove nutrients, which can save energy and effectively control the occurrence of membrane contamination. In this study, membrane contamination was controlled using an MBR in intermittent aeration operation mode and a filtration backwash cycle; difficult organic matter and nitrogen (COD and NH<sub>4</sub><sup>+</sup>-N) were used as the main contamination indicators for this study; and the main membrane contamination components, extracellular polymers (EPs), and soluble microbial products (SMPs) were detected. The results show that the average removal of COD and NH<sub>4</sub><sup>+</sup>-N could reach 86.45% and 92.47%, respectively, with a 2.0 day intermittent aeration time and 9/1 min filtration backwash cycle mode, and it also helped to reduce the membrane contamination, as shown by a decrease of 11.87% in bound EPs (EPS<sub>Bound</sub>) and an increase of only 5.32% in SMPs. Microbiological analyses revealed that Proteobacteria and Acinetobacter, as dominant bacteria (50.90%), were the main causes of membrane contamination.https://www.mdpi.com/2073-4441/15/23/4144intermittent aerationfiltration backwashingwater reusemembrane contamination control |
| spellingShingle | Ruoting Gao Ronglin Sun Chunfang Zhang Wenjie Zhang Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse Water intermittent aeration filtration backwashing water reuse membrane contamination control |
| title | Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse |
| title_full | Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse |
| title_fullStr | Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse |
| title_full_unstemmed | Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse |
| title_short | Membrane Contamination Control in the Intermittent Aeration Mode of Operation of the C-MBR Process for Campus Wastewater Reuse |
| title_sort | membrane contamination control in the intermittent aeration mode of operation of the c mbr process for campus wastewater reuse |
| topic | intermittent aeration filtration backwashing water reuse membrane contamination control |
| url | https://www.mdpi.com/2073-4441/15/23/4144 |
| work_keys_str_mv | AT ruotinggao membranecontaminationcontrolintheintermittentaerationmodeofoperationofthecmbrprocessforcampuswastewaterreuse AT ronglinsun membranecontaminationcontrolintheintermittentaerationmodeofoperationofthecmbrprocessforcampuswastewaterreuse AT chunfangzhang membranecontaminationcontrolintheintermittentaerationmodeofoperationofthecmbrprocessforcampuswastewaterreuse AT wenjiezhang membranecontaminationcontrolintheintermittentaerationmodeofoperationofthecmbrprocessforcampuswastewaterreuse |