Article ; Online: Aerobic and anoxic utilization of organic matter for flexible nitrite supply in nutrient conversion pathways based on anaerobic ammonium oxidation: Microbial interactive mechanism.
2024 Volume 397, Page(s) 130473
Abstract: This study investigated nutrient conversion pathways and corresponding interactive mechanisms in a mainstream partial-nitritation (PN)/anaerobic ammonium oxidation (anammox)/partial-denitrification-(PD)-enhanced biological phosphorus-removal (EBPR) (PN/A/ ...
Abstract | This study investigated nutrient conversion pathways and corresponding interactive mechanisms in a mainstream partial-nitritation (PN)/anaerobic ammonium oxidation (anammox)/partial-denitrification-(PD)-enhanced biological phosphorus-removal (EBPR) (PN/A/PD-EBPR) process. A laboratory-scale sequencing batch reactor was operated for 301 days under different operational strategies. Mainstream PN/A/PD-EBPR was successfully operated with aerobic and anoxic utilization of organic matter. Aerobic utilization of organic matter was an effective strategy for conversion to denitrifying polyphosphate-accumulating organism-based phosphorus removal, referring to a biological reaction that outperformed nitrite-oxidizing bacteria. Aerobically adsorbed organic matter could be used as a carbon source for PD, which further enhanced nitrogen removal by PN/A. Ultimately, the interaction between complex nutrient conversion pathways served to achieve stable performance. High-throughput sequencing results elucidated the core microbe functioning in the mainstream PN/A/PD-EBPR process with respect to various nutrients. The outcomes of this study will be beneficial to those attempting to implement mainstream PN/A/PD-EBPR. |
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MeSH term(s) | Nitrites ; Anaerobiosis ; Bioreactors/microbiology ; Oxidation-Reduction ; Nutrients ; Nitrogen ; Phosphorus ; Ammonium Compounds ; Sewage ; Denitrification |
Chemical Substances | Nitrites ; Nitrogen (N762921K75) ; Phosphorus (27YLU75U4W) ; Ammonium Compounds ; Sewage |
Language | English |
Publishing date | 2024-02-20 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 1065195-0 |
ISSN | 1873-2976 ; 0960-8524 |
ISSN (online) | 1873-2976 |
ISSN | 0960-8524 |
DOI | 10.1016/j.biortech.2024.130473 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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