Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks
Anaerobic activated sludge plays a key role in the anaerobic digestion (AD) treatment of wastewater. The ability of anaerobic activated sludge to endure stress shock determines the performance of AD. In this study, the resistance of anaerobic activated sludge acclimated by three feeding patterns (co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-05-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/85/10/3023 |
| _version_ | 1811220280481153024 |
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| author | Fuzhi Lu Luodong Huang Feng Qian Qiong Jiang Sohail Khan Peihong Shen |
| author_facet | Fuzhi Lu Luodong Huang Feng Qian Qiong Jiang Sohail Khan Peihong Shen |
| author_sort | Fuzhi Lu |
| collection | DOAJ |
| description | Anaerobic activated sludge plays a key role in the anaerobic digestion (AD) treatment of wastewater. The ability of anaerobic activated sludge to endure stress shock determines the performance of AD. In this study, the resistance of anaerobic activated sludge acclimated by three feeding patterns (continuous, semi-continuous, and pulse) to four stress shocks, including low pH influent, high OLR (organic loading rate), high ammonium and high sulfate, was investigated respectively. The results showed that the anaerobic activated sludge acclimated by semi-continuous feeding had the best resistance to high OLR shock, followed by pulse feeding, and then continuous feeding. There was no significant difference in the resistance of the three activated sludge to the other stress shocks. Under stress shock, the microbial community structure and abundance of specific functional microorganisms in the activated sludge acclimated by different feeding patterns varied, while the relative abundance of Methanosarcinaceae in the anaerobic activated sludge increased. The variation in the relative abundance of specific functional microorganisms was in charge of the differences in the resistance of anaerobic activated sludge. Overall, the results presented herein provide reference for improving the stability and effectiveness of activated sludge under adverse conditions. HIGHLIGHTS
Resistance of activated sludge acclimated by three feeding patterns was studied.;
Acclimated activated sludge was well resistant to low pH influent and high sulfate.;
Sludge acclimated by semi-continuous feeding can best resist to high OLR shock.;
The relative abundance of Methanosarcinaceae increased under stress shock.;
Differences in functional microbial abundance led to different resistance of sludge.; |
| first_indexed | 2024-04-12T07:40:18Z |
| format | Article |
| id | doaj.art-6e34339ddf9348158ac38292209124fe |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-12T07:40:18Z |
| publishDate | 2022-05-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-6e34339ddf9348158ac38292209124fe2022-12-22T03:41:51ZengIWA PublishingWater Science and Technology0273-12231996-97322022-05-0185103023303510.2166/wst.2022.119119Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocksFuzhi Lu0Luodong Huang1Feng Qian2Qiong Jiang3Sohail Khan4Peihong Shen5 State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530005, China Anaerobic activated sludge plays a key role in the anaerobic digestion (AD) treatment of wastewater. The ability of anaerobic activated sludge to endure stress shock determines the performance of AD. In this study, the resistance of anaerobic activated sludge acclimated by three feeding patterns (continuous, semi-continuous, and pulse) to four stress shocks, including low pH influent, high OLR (organic loading rate), high ammonium and high sulfate, was investigated respectively. The results showed that the anaerobic activated sludge acclimated by semi-continuous feeding had the best resistance to high OLR shock, followed by pulse feeding, and then continuous feeding. There was no significant difference in the resistance of the three activated sludge to the other stress shocks. Under stress shock, the microbial community structure and abundance of specific functional microorganisms in the activated sludge acclimated by different feeding patterns varied, while the relative abundance of Methanosarcinaceae in the anaerobic activated sludge increased. The variation in the relative abundance of specific functional microorganisms was in charge of the differences in the resistance of anaerobic activated sludge. Overall, the results presented herein provide reference for improving the stability and effectiveness of activated sludge under adverse conditions. HIGHLIGHTS Resistance of activated sludge acclimated by three feeding patterns was studied.; Acclimated activated sludge was well resistant to low pH influent and high sulfate.; Sludge acclimated by semi-continuous feeding can best resist to high OLR shock.; The relative abundance of Methanosarcinaceae increased under stress shock.; Differences in functional microbial abundance led to different resistance of sludge.;http://wst.iwaponline.com/content/85/10/3023anaerobic activated sludgefeeding patternmicrobial communityresistancestress shock |
| spellingShingle | Fuzhi Lu Luodong Huang Feng Qian Qiong Jiang Sohail Khan Peihong Shen Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks Water Science and Technology anaerobic activated sludge feeding pattern microbial community resistance stress shock |
| title | Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks |
| title_full | Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks |
| title_fullStr | Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks |
| title_full_unstemmed | Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks |
| title_short | Resistance of anaerobic activated sludge acclimated by different feeding patterns: response to different stress shocks |
| title_sort | resistance of anaerobic activated sludge acclimated by different feeding patterns response to different stress shocks |
| topic | anaerobic activated sludge feeding pattern microbial community resistance stress shock |
| url | http://wst.iwaponline.com/content/85/10/3023 |
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