Опубликована: Янв. 1, 2024
Язык: Английский
Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106945 - 106945
Опубликована: Янв. 9, 2025
Язык: Английский
Процитировано
1Water Research, Год журнала: 2025, Номер 274, С. 123128 - 123128
Опубликована: Янв. 10, 2025
Current published models for nitrous oxide (N2O) emission in membrane aerated biofilm reactors (MABR) have several simplifications that are not representative of full-scale systems. This study developed an improved MABR N2O model captured commonly overlooked phenomena such as back diffusion generated into lumen gas and the recirculation laden tank mixing thickness control. The was validated with measured concentrations phase bulk mixed liquor a hybrid facility. used to obtain insights bioconversion pathways. Model predictions revealed inner layers were hotspots generation via ammonium oxidizing organism activity. transported outer reduced heterotrophic denitrification pathway. predicted up 70 % carried by recirculated scrubbed which further denitrified. An ratio 0.18 ± 0.01 N2ON/N load estimated process achieved 50 removal influent N load, highlighting potential this technology mitigate emissions when compared conventional activated sludge.
Язык: Английский
Процитировано
1Bioresource Technology, Год журнала: 2025, Номер unknown, С. 132207 - 132207
Опубликована: Фев. 1, 2025
This study examined biofilm thickness, density, and microbial composition in a full-scale MABR treating municipal wastewater, focusing on their spatial operational variability. The cassette arrangement created thickness gradient, with biofilms the front cassettes more than twice as thick those at back. Lower scouring intensity due to reduced airflow resulted thicker biofilms. Microbial communities varied longitudinally by phase, having higher relative abundance of anaerobic microorganisms, such fermenters sulfur reducers, fewer aerobic nitrifiers. Nitrosomonas were main ammonia oxidizers, while Nitrospira Ca. Nitrotoga dominated nitrite oxidizers. 16S RNA gene profiles showed strong correlations (R2 = 0.8) nitrification rates 0.4). Full-scale characteristics have not been studied before. Study findings practical implications for better modeling practices improved design future facilities.
Язык: Английский
Процитировано
1Water Research, Год журнала: 2023, Номер 246, С. 120716 - 120716
Опубликована: Окт. 9, 2023
Язык: Английский
Процитировано
13Journal of Environmental Management, Год журнала: 2024, Номер 367, С. 122038 - 122038
Опубликована: Авг. 3, 2024
Язык: Английский
Процитировано
4Water Research, Год журнала: 2025, Номер 278, С. 123337 - 123337
Опубликована: Фев. 20, 2025
Язык: Английский
Процитировано
0ACS ES&T Engineering, Год журнала: 2025, Номер unknown
Опубликована: Март 6, 2025
Язык: Английский
Процитировано
0Journal of Environmental Management, Год журнала: 2025, Номер 380, С. 125028 - 125028
Опубликована: Март 18, 2025
Язык: Английский
Процитировано
0Water Research, Год журнала: 2025, Номер unknown, С. 123523 - 123523
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116352 - 116352
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0