Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures
In this study, the characteristics of activated sludge flocs were investigated and their effects on the evolution of membrane fouling were considered in the anaerobic membrane bioreactors (AnMBR), which were operated at 25 and 35 °C for municipal wastewater treatment. It was found that the membrane...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/10/9/231 |
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| author | Yi Ding Zhansheng Guo Zhenlin Liang Xuguang Hou Zhipeng Li Dashuai Mu Changzi Ge Chunpeng Zhang Chao Jin |
| author_facet | Yi Ding Zhansheng Guo Zhenlin Liang Xuguang Hou Zhipeng Li Dashuai Mu Changzi Ge Chunpeng Zhang Chao Jin |
| author_sort | Yi Ding |
| collection | DOAJ |
| description | In this study, the characteristics of activated sludge flocs were investigated and their effects on the evolution of membrane fouling were considered in the anaerobic membrane bioreactors (AnMBR), which were operated at 25 and 35 °C for municipal wastewater treatment. It was found that the membrane fouling rate of the AnMBR at 25 °C was more severe than that at 35 °C. The membrane fouling trends were not consistent with the change in the concentration of soluble microbial product (SMP). The larger amount of SMP in the AnMBR at 35 °C did not induce more severe membrane fouling than that in the AnMBR at 25 °C. However, the polysaccharide and protein concentration of extracellular polymeric substance (EPS) was higher in the AnMBR at 25 °C in comparison with that in the AnMBR at 35 °C, and the protein/polysaccharide ratio of the EPS in the AnMBR at 25 °C was higher in contrast to that in the AnMBR at 35 °C. Meanwhile, the fouling tendencies measured for the AnMBRs could be related to the characteristics of loosely bound EPS and tightly bound EPS. The analysis of the activated sludge flocs characteristics indicated that a smaller sludge particle size and more fine flocs were observed at the AnMBR with 25 °C. Therefore, the membrane fouling potential in the AnMBR could be explained by the characteristics of activated sludge flocs. |
| first_indexed | 2024-03-10T16:21:56Z |
| format | Article |
| id | doaj.art-c4b02a57240e42368892abadaadfcdf6 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T16:21:56Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-c4b02a57240e42368892abadaadfcdf62023-11-20T13:35:10ZengMDPI AGMembranes2077-03752020-09-0110923110.3390/membranes10090231Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different TemperaturesYi Ding0Zhansheng Guo1Zhenlin Liang2Xuguang Hou3Zhipeng Li4Dashuai Mu5Changzi Ge6Chunpeng Zhang7Chao Jin8Marine College, Shandong University, Weihai 264209, ChinaMarine College, Shandong University, Weihai 264209, ChinaMarine College, Shandong University, Weihai 264209, ChinaMarine College, Shandong University, Weihai 264209, ChinaState Key Laboratory of Urban Water Resources and Water Environment, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264200, ChinaMarine College, Shandong University, Weihai 264209, ChinaMarine College, Shandong University, Weihai 264209, ChinaKey Laboratory of Groundwater Resources and Environment (Ministry of Education), Jilin University, Changchun 130021, ChinaSchool of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, ChinaIn this study, the characteristics of activated sludge flocs were investigated and their effects on the evolution of membrane fouling were considered in the anaerobic membrane bioreactors (AnMBR), which were operated at 25 and 35 °C for municipal wastewater treatment. It was found that the membrane fouling rate of the AnMBR at 25 °C was more severe than that at 35 °C. The membrane fouling trends were not consistent with the change in the concentration of soluble microbial product (SMP). The larger amount of SMP in the AnMBR at 35 °C did not induce more severe membrane fouling than that in the AnMBR at 25 °C. However, the polysaccharide and protein concentration of extracellular polymeric substance (EPS) was higher in the AnMBR at 25 °C in comparison with that in the AnMBR at 35 °C, and the protein/polysaccharide ratio of the EPS in the AnMBR at 25 °C was higher in contrast to that in the AnMBR at 35 °C. Meanwhile, the fouling tendencies measured for the AnMBRs could be related to the characteristics of loosely bound EPS and tightly bound EPS. The analysis of the activated sludge flocs characteristics indicated that a smaller sludge particle size and more fine flocs were observed at the AnMBR with 25 °C. Therefore, the membrane fouling potential in the AnMBR could be explained by the characteristics of activated sludge flocs.https://www.mdpi.com/2077-0375/10/9/231anaerobic membrane bioreactortemperaturemembrane fouling behaviorsludge flocs characteristicssoluble microbial productextracellular polymeric substance |
| spellingShingle | Yi Ding Zhansheng Guo Zhenlin Liang Xuguang Hou Zhipeng Li Dashuai Mu Changzi Ge Chunpeng Zhang Chao Jin Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures Membranes anaerobic membrane bioreactor temperature membrane fouling behavior sludge flocs characteristics soluble microbial product extracellular polymeric substance |
| title | Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures |
| title_full | Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures |
| title_fullStr | Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures |
| title_full_unstemmed | Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures |
| title_short | Long-Term Investigation into the Membrane Fouling Behavior in Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment Operated at Two Different Temperatures |
| title_sort | long term investigation into the membrane fouling behavior in anaerobic membrane bioreactors for municipal wastewater treatment operated at two different temperatures |
| topic | anaerobic membrane bioreactor temperature membrane fouling behavior sludge flocs characteristics soluble microbial product extracellular polymeric substance |
| url | https://www.mdpi.com/2077-0375/10/9/231 |
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