A novel simultaneous partial nitrification and denitratation (SPND) process in single micro-aerobic sequencing batch reactor for stable nitrite accumulation under ambient temperature

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 425, P. 130646 - 130646

Published: June 4, 2021

Language: Английский

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Achieving and control of partial denitrification in anoxic-oxic process of real municipal wastewater treatment plant

Bioresource Technology, Journal Year: 2021, Volume and Issue: 341, P. 125765 - 125765

Published: Aug. 19, 2021

Language: Английский

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Effect of ferric iron (Fe(Ш)) on heterotrophic solid-phase denitrification: Denitrification performance and metabolic pathway

Bioresource Technology, Journal Year: 2022, Volume and Issue: 369, P. 128401 - 128401

Published: Nov. 26, 2022

Language: Английский

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Microbial community dynamics and performance of simultaneous anammox and denitrification (SAD) process at varying substrate loadings during long-term operation

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(3), P. 110225 - 110225

Published: May 30, 2023

Language: Английский

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Enhancing Competitiveness of Anammox Bacteria with Domestic Wastewater as Electron Donor for Nitrate-Preferential Denitrification: Experimental Evidence and Metagenomic Mechanism

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(2), P. 1007 - 1018

Published: Jan. 5, 2024

The novel partial denitrification coupling with the anammox (PD/A) process is emerging as a promising alternative for cost-efficient nitrogen removal from wastewater. However, it encounters challenges of competition heterotrophic NO2–-N and inhibition complex organic carbon involved in This work demonstrated efficient stable nitrate-containing wastewater (NO3–-N 20–400 mg/L) domestic (NH4+-N 60.8 ± 5.6 mg/L, COD 195.6 58.4 by single-stage PD/A process. generation was achieved utilizing With feed volume ratio to (VNO3/Vdom) decreasing 2.4/0.6 0.5/2.5, efficiency NH4+-N NO3–-N 84.2% 98.3%, respectively. Anammox bacteria were found strongly compete over denitrifying contribution pathway total high 91.6%. Enhanced competitiveness substrate increasing utilization source Metagenomic analysis revealed that electrons produced NADH more preferentially transported reductase rather than reductase. Therefore, Thauera main holder Nar genes Candidatus Brocadia jointly removed NH4+-N. Sludge granulation also facilitated retention bacteria. Overall, this study highlighted heterotrophic–autotrophic cooperation situ wastewater, providing valuable technical support advance toward practical application.

Language: Английский

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A single-stage membrane aerated biofilm reactor achieving the combination of partial nitritation/anammox and enhanced biological phosphorus removal

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 58, P. 104933 - 104933

Published: Feb. 1, 2024

Language: Английский

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Development of a novel denitrifying phosphorus removal and partial denitrification anammox (DPR + PDA) process for advanced nitrogen and phosphorus removal from domestic and nitrate wastewaters

Bioresource Technology, Journal Year: 2021, Volume and Issue: 327, P. 124795 - 124795

Published: Feb. 5, 2021

Language: Английский

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Linking Genome-Centric Metagenomics to Kinetic Analysis Reveals the Regulation Mechanism of Hydroxylamine in Nitrite Accumulation of Biological Denitrification

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(14), P. 10317 - 10328

Published: June 27, 2022

Given hydroxylamine accumulation in various nitrification systems and its potential mechanism regulating the subsequent denitrification process were unraveled this study. Hydroxylamine (>0.5 mgN/L) immediately induced nitrite of activated sludge by inhibiting activities reductases their electron transport modules (Complex III cytochrome c). Moreover, long-term exposure to 0.5–2.5 mgN/L accelerated functional transformation from denitratation under low C/N conditions. However, genome-centric metagenomics indicated that a genotypic complete rather than truncated denitrifier Thauera aminoaromatica TJ127 was enriched mainly responsible for acetate storage nitrate reduction community. Interestingly, enrichment resulted production sequentially but reduced only carbon-limited conditions (C/N ≤ 3.0). Thus, it showed higher tolerance concurrent phenotype denitrifiers sludge. due anoxic capability feast phase, became highly specialized decreasing feast/famine ratio, thus satisfactory performance still maintained without hydroxylamine. These results suggested transient release may interfere with metabolism, continuous is beneficial achieving denitratation, which could steadily provide mainstream anammox.

Language: Английский

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Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138631 - 138631

Published: Aug. 13, 2022

Language: Английский

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Distinct mechanisms underlying assembly processes and interactions of microbial communities in two single-stage bioreactors coupling anammox with denitrification

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 452, P. 139319 - 139319

Published: Sept. 21, 2022

Language: Английский

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