Synergistic Integration of Anammox and Endogenous Denitrification Processes for the Simultaneous Carbon, Nitrogen, and Phosphorus Removal

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(24), P. 10632 - 10643

Published: May 31, 2024

The feasibility of a synergistic endogenous partial denitrification-phosphorus removal coupled anammox (SEPD-PR/A) system was investigated in modified anaerobic baffled reactor (mABR) for synchronous carbon, nitrogen, and phosphorus removal. mABR comprising four identical compartments (i.e., C1–C4) inoculated with precultured denitrifying glycogen-accumulating organisms (DGAOs), polyphosphate-accumulating organisms, bacteria. After 136 days operation, the chemical oxygen demand (COD), total efficiencies reached 88.6 ± 1.0, 97.2 1.5, 89.1 4.2%, respectively. Network-based analysis revealed that biofilmed community demonstrated stable nutrient performance under oligotrophic conditions C4. metagenome-assembled genomes (MAGs) such as MAG106, MAG127, MAG52, MAG37 annotated phosphorus-accumulating (DPAOs) MAG146 DGAO were dominated C1 C2 contributed to 89.2% COD consumption. MAG54 MAG16 Candidatus_Brocadia (total relative abundance 16.5% C3 4.3% C4) responsible 74.4% nitrogen through anammox-mediated pathway. Functional gene based on metagenomic sequencing confirmed different capable performing distinct functions specific advantageous microbial groups, facilitating targeted Additionally, conditions, activity bacteria-related genes hzs higher compared hdh. Thus, an innovative method treatment low-strength municipal nitrate-containing wastewaters without aeration presented, mediated by process less land area excellent quality effluent.

Language: Английский

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Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies

Sustainability, Journal Year: 2024, Volume and Issue: 16(5), P. 2112 - 2112

Published: March 3, 2024

Nitrogen-rich wastewater is a major environmental issue that requires proper treatment before disposal. This comprehensive overview covers biological, physical, and chemical nitrogen removal methods. Simultaneous nitrification–denitrification (SND) most effective in saline water when utilizing both aerobic anoxic conditions with diverse microbial populations for removal. Coupling anammox denitrification could increase rates reduce energy demand. Suspended growth bioreactors effectively treated COD/N ratios demonstrated resilience to low C/N ratios. Moving biofilm exhibit reduced mortality rates, enhanced sludge–liquid separation, increased efficiency, stronger biological structures. SND studies show ≥90% total efficiency (%RETN) setups, Defluviicoccus, Nitrosomonas, Nitrospira as the main communities, while anammox–denitrification achieved %RETN of 77%. Systems using polyvinyl alcohol/sodium alginate medium showed ≥ 75%. Air-lift reflux configurations exhibited high %RENH4, reducing costs minimizing sludge formation. Microwave pretreatment high-frequency electric fields be used improve %RENH4. Adsorption/ion exchange, membrane distillation, ultrafiltration, nanofiltration promise industrial treatment. AOPs sulfate-based oxidants eliminate compounds from wastewater. Tailoring proposed treatments cost-effective removal, optimizing interactions, analyzing techno-economics emerging technologies are crucial.

Language: Английский

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Biotransformation of nitrogen and tetracycline by counter-diffusion biofilm system: Multiple metabolic pathways, mechanism, and slower resistance genes enrichment

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145637 - 145637

Published: Aug. 26, 2023

Language: Английский

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Integrating membrane aerated biofilm reactors with biological nitrogen removal processes: A new paradigm for achieving sustainable wastewater treatment plants

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 475, P. 146025 - 146025

Published: Sept. 18, 2023

Language: Английский

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Synergistic algal/bacterial interaction in membrane bioreactor for detoxification of 1,2-dichloroethane-rich petroleum wastewater

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 470, P. 134125 - 134125

Published: March 29, 2024

Language: Английский

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Simultaneous carbon, nitrogen and phosphorus removal in sequencing batch membrane aerated biofilm reactor with biofilm thickness control via air scouring aided by computational fluid dynamics

Bioresource Technology, Journal Year: 2024, Volume and Issue: 409, P. 131267 - 131267

Published: Aug. 12, 2024

Language: Английский

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Biofiltration for low-carbon rural wastewater treatment: A review of advancements and opportunities towards carbon neutrality

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114373 - 114373

Published: Oct. 9, 2024

Language: Английский

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In Situ Anammox Self-Enrichment Using a Pilot-Scale Hybrid Membrane-Aerated Biofilm Reactor System for Municipal Wastewater Treatment with a Low Carbon to Nitrogen Ratio

ACS ES&T Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

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Process intensification in nitrogen removal by combining membrane-aerated bioreactor and membrane bioreactor: a review

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116352 - 116352

Published: March 1, 2025

Language: Английский

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An update on hybrid membrane aerated biofilm reactor technology

Water Environment Research, Journal Year: 2025, Volume and Issue: 97(4)

Published: April 1, 2025

Abstract The hybrid membrane aerated biofilm reactor (MABR) process combines the advantages of counter‐diffusional and bubbleless aeration MABR with good bioflocculation carbon processing capabilities suspended growth processes. These features result in a reduced physical footprint, excellent biological nutrient removal capabilities, potentially greenhouse gas (GHG) emissions, significantly energy requirements that can be easily retrofitted into existing Commercially introduced mid‐2010s, demonstrated are resulting rapid full‐scale adoption. Meanwhile, researchers advancing knowledge on revealing potential opportunities for improved performance. This paper summarizes recent findings identifies areas further developed to advance evaluation development. Practitioner Points Rapid application is leading significant new developments enhance Sizing nearly complete nitrification allows downsizing bioreactor, coupled nitrogen savings. Online exhaust % O 2 bulk ammonia concentration used create soft sensor characterizing changes thickness enabling control optimize Further advancements through control, configurations achieve partial nitritation annammox, achieving granulation offer advances.

Language: Английский

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