Internal mechanism of microbial nitrogen removal under prolonged low-temperature stress: A focus on microbial communities, metabolic pathways, and microbial function

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157522 - 157522

Опубликована: Ноя. 1, 2024

Язык: Английский

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Optimizing nitrogen removal with an immobilized biological filler system: realizing stage-independent operational process

PLoS ONE, Год журнала: 2025, Номер 20(3), С. e0315864 - e0315864

Опубликована: Март 5, 2025

Due to the operation mode of traditional activated sludge systems, it is difficult for various functional bacteria exert their respective advantages. In this study, immobilized fillers hydrolytic acidification, nitrification, and denitrification were developed allow independent at each stage, enhancing nitrogen removal performance overall process. The results showed that ammonia total levels in effluent stabilized 0.75-0.83 1.5-2 mg/L, respectively, when hydraulic retention time (HRT) system was 6.4 h nitrification unit HRT 3 h. These values represented significant improvements compared with Unit tests revealed reducing hydrolytic-acidification 0 min increased nitrite nitrate A2 6.11 ± 0.2 mg/L 3.67 0.1 respectively. This demonstrates an active hydrolysis - acidification stage prerequisite fully utilize raw organic matter water remove nitrogen. When bypassed entered O1 directly, oxidation rate (AOR) significantly decreased (from 0.32-0.33 0.22-0.23 kg/m3 ⋅ d), further reduction a low temperature (down 0.11-0.12 d). At time, AOR, unaffected by matter, only slightly. indicates directing into essential maintaining stability resisting temperatures. process has certain guiding significance improving efficiency municipal wastewater processes.

Язык: Английский

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Impacts of sulfamethoxazole on heterotrophic nitrification-aerobic denitrification bacteria and its response strategies: Insights from physiology to proteomics

Journal of Environmental Management, Год журнала: 2025, Номер 379, С. 124890 - 124890

Опубликована: Март 8, 2025

Язык: Английский

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Effect of hydraulic retention time on the nitrogen removal performance of pure biofilm rotating biological contactor system inoculated with heterotrophic nitrification-aerobic denitrification bacteria and its corresponding mechanism

Bioresource Technology, Год журнала: 2025, Номер unknown, С. 132428 - 132428

Опубликована: Март 1, 2025

Язык: Английский

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Analysis of pollutant removal regularities and sludge-film co-existence characteristics in OAO micro-pressure internal circulation composite biological treatment process

Journal of Water Process Engineering, Год журнала: 2025, Номер 72, С. 107560 - 107560

Опубликована: Апрель 1, 2025

Язык: Английский

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Removal and recovery of nitrogen from anaerobically treated leachate based on a neglected HNAD nitrogen removal pathway: NH3 stripping

Bioresource Technology, Год журнала: 2024, Номер 413, С. 131488 - 131488

Опубликована: Сен. 13, 2024

Язык: Английский

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Removal of melanoidin from baker yeast plant wastewater: A comparative study on chemical and biological processes

Journal of Water Process Engineering, Год журнала: 2024, Номер 61, С. 105301 - 105301

Опубликована: Апрель 15, 2024

Язык: Английский

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Effect of Hrt on the Nitrogen Removal Performance of Pure Biofilm Rotating Biological Contactor System Inoculated with Hn-Ad Bacteria and its Corresponding Mechanism

Опубликована: Янв. 1, 2024

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Язык: Английский

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Enhancing simultaneous nitrification and denitrification (SND) and repulsing nitrite-loop in an energy-efficient bioreactor with airlift transverse internal-loop along cross section

Journal of Water Process Engineering, Год журнала: 2024, Номер 68, С. 106496 - 106496

Опубликована: Ноя. 11, 2024

Язык: Английский

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Effect of Hrt on the Nitrogen Removal Performance of Pure Biofilm Rotating Biological Contactor System Inoculated with Hn-Ad Bacteria and its Corresponding Mechanism

Опубликована: Янв. 1, 2024

Язык: Английский

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