Synergistic denitrification mechanism of domesticated aerobic denitrifying bacteria in low-temperature municipal wastewater treatment

npj Clean Water, Journal Year: 2024, Volume and Issue: 7(1)

Published: Feb. 5, 2024

Abstract To address the problems of low efficacy and microbial activity in low-temperature municipal wastewater treatment, this study utilized an air-lift micro-pressure internal circulation integrated reactor (AMICIR). Through controlling amount aeration dissolved oxygen (DO) reactor, AMICIR creates alternating aerobic anaerobic environments, explores enrichment conditions denitrifying bacteria, examines changes pollutant removal efficiency characteristics bacterial colony structure during process bacteria system, reveals mechanism nitrogen by cooperating with treatment system. Experimental results showed average rates NH 4 + -N, chemical demand (COD), total phosphorus (TP), (TN) reaching 93.85%, 89.30%, 92.75%, 75.4%, respectively. The microorganisms secreted large amounts proteins polysaccharides, forming zoogloea microenvironments conducive to traditional denitrification reactions. IlluminaMiSeq sequencing analysis revealed presence phyla. system was enriched a number microorganisms, ( Flavobacterium , Rhodoferax Pseudomonas ) were successfully cultured. emerged as dominant species, relative abundance ranging from 18.56% 22.60%. Functional gene prediction indicated high genes, such napA . Aerobic improve at temperatures.

Language: Английский

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Steel slag enhanced simultaneous nitrogen and phosphorus removal from low C/N wastewater by sulfur-driven autotrophic denitrification

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107406 - 107406

Published: March 10, 2025

Language: Английский

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Boosting low-temperature sulfur-based autotrophic-heterotrophic denitrification using electrical stimulation in a continuous-flow bioreactor

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107087 - 107087

Published: Jan. 25, 2025

Language: Английский

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Sulfur autotrophic denitrification as a sustainable nitrogen removal technology to achieve carbon neutrality: Recent advances and optimization strategies

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107154 - 107154

Published: Feb. 1, 2025

Language: Английский

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Strategy of sulfur autotrophic denitrification system for nitrogen removal from landfill leachate with temperature variations

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116017 - 116017

Published: Feb. 1, 2025

Language: Английский

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Impact of Temperature Switching on Nitrogen Removal and Effluent S/N Ratio via Sulfur Autotrophic Denitrification

Biochemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 109703 - 109703

Published: March 1, 2025

Language: Английский

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Multifunctional Role of the Biological Sulfur Cycle in Wastewater Treatment: Sulfur Oxidation, Sulfur Reduction, and Sulfur Disproportionation

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101100 - 101100

Published: March 1, 2025

Language: Английский

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Microbial mutualisms explain the influencing mechanism of current density on the performance of a sole pyrite-based electrochemical bioreactor during the stable phase

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161684 - 161684

Published: March 1, 2025

Language: Английский

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Comparison of nitrification performance in SBR and SBBR with response to NaCl salinity shock: Microbial structure and functional genes

Environmental Research, Journal Year: 2024, Volume and Issue: 252, P. 118917 - 118917

Published: April 16, 2024

Language: Английский

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Advanced oxidation/air flotation collaborative treatment of high-sulfur oilfield produced water

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101185 - 101185

Published: April 1, 2025

Language: Английский

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