Optimization of moving bed membrane bioreactor process for improved water and nutrient recovery from domestic wastewater

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106934 - 106934

Опубликована: Янв. 5, 2025

Язык: Английский

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Denitrification Mechanism of Heterotrophic Aerobic Denitrifying Pseudomonas hunanensis Strain DC-2 and Its Application in Aquaculture Wastewater

Water, Год журнала: 2024, Номер 16(11), С. 1625 - 1625

Опубликована: Июнь 6, 2024

A novel heterotrophic aerobic denitrifying Pseudomonas hunanensis strain DC-2 was screened from the sediments of Lake Dianchi and identified with high nitrification/denitrification ability. Within 30 h, removal efficiency ammonium-N nitrate-N could reach 98.8% 88.4%, respectively. The results single-factor experiments indicated that exhibited excellent denitrification ability under conditions using sodium citrate as nitrogen source, an initial pH 7, a C/N ratio 10, temperature °C. Nitrogen balance suggested this removed N mainly via assimilation. Moreover, pathway explored by genome enzymatic assays, complex metabolism established, including nitrification-aerobic (HN-AD), assimilatory reduction nitrate (ANRA), ammonia Additionally, immobilized into particles for denitrification, demonstrating efficacy in continuous total (84.8% TN). Hence, demonstrated significant potential treating real aquaculture wastewater.

Язык: Английский

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Iron-based multi-carbon composite and Pseudomonas furukawaii ZS1 co-affect nitrogen removal, microbial community dynamics and metabolism pathways in low-temperature aquaculture wastewater

Journal of Environmental Management, Год журнала: 2023, Номер 349, С. 119471 - 119471

Опубликована: Окт. 31, 2023

Язык: Английский

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Enhancement strategies of aerobic denitrification for efficient nitrogen removal from low carbon-to-nitrogen ratio shale oil wastewater

Bioresource Technology, Год журнала: 2023, Номер 387, С. 129663 - 129663

Опубликована: Авг. 12, 2023

Язык: Английский

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Optimizing carbon sources on performance for enhanced efficacy in single-stage aerobic simultaneous nitrogen and phosphorus removal via biofloc technology

Bioresource Technology, Год журнала: 2024, Номер 411, С. 131347 - 131347

Опубликована: Авг. 27, 2024

Язык: Английский

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The combination of nanobubble aeration and iron-based multi-carbon source composites achieves efficient aquaculture wastewater nitrogen removal

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 152093 - 152093

Опубликована: Май 9, 2024

Язык: Английский

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Removal of Nitrogen and Phosphorus by a Novel Salt-Tolerant Strain Pseudomonas sediminis D4

Water, Год журнала: 2025, Номер 17(4), С. 502 - 502

Опубликована: Фев. 11, 2025

Managing nitrogen and phosphorus pollution in high-salinity wastewater is a critical challenge for sustainable aquaculture environmental protection. In this study, novel salt-tolerant strain, Pseudomonas sediminis D4, was isolated from brackish water environment. This strain exhibited simultaneous heterotrophic nitrification–aerobic denitrification removal capabilities. Biosafety assays demonstrated that the antibiotic-sensitive safe aquatic environments. The optimal conditions phosphate of D4 were carbon/nitrogen (C/N) ratio 10, phosphorus/nitrogen (P/N) 0.2, pH 7, temperature 30 °C while using sodium succinate as carbon source. Under these conditions, achieved efficiencies 97.36% ammonia (NH4+-N), 100.00% nitrate (NO3−-N), 98.02% nitrite (NO2−-N), along with 94.69%, 89.56%, 97.40% PO43−P, respectively. strong salinity tolerance, functioning effectively within range 0% to 5% (w/v), maintaining high efficiency at 3%. Enzyme activity verified existence key enzymes, such oxidase, oxidoreductase, reductase, polyphosphate kinase, exopolyphosphatase, which are essential nitrification-aerobic capabilities D4. These findings highlight potential biological treatment wastewater.

Язык: Английский

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Advancing biological phosphorus removal from carbon-limited potato processing wastewater: enhancing EBPR through organic load optimization

Journal of Water Process Engineering, Год журнала: 2025, Номер 75, С. 107890 - 107890

Опубликована: Май 10, 2025

Язык: Английский

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Using Natural and Artificial Microalgal-Bacterial Granular Sludge for Wastewater Effluent Polishing

Water, Год журнала: 2023, Номер 15(14), С. 2605 - 2605

Опубликована: Июль 18, 2023

Marimo is a type of microalgal-bacterial granular sludge (MBGS) that exists in natural water bodies. For the first time, this paper explored feasibility marimo real wastewater effluent polishing, focusing on nutrient removal as compared with MBGS. The results showed color gradually darkened during 21-day experiment, and chlorophyll content increased significantly. Although MBGS fairly similar performance terms NO3−-N TN, exhibited better phosphate to contained different algae but same bacterial phylum Proteobacteria, including denitrifiers. In addition, had higher relative abundance nitrite reductase than MBGS, suggesting denitrification process might also happen addition assimilation. This study expected initiate application for polishing reclamation, shedding light nature-based self-purification technology era carbon neutrality.

Язык: Английский

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Explaining nitrogen turnover in sediments and water through variations in microbial community composition and potential function

Chemosphere, Год журнала: 2023, Номер 344, С. 140379 - 140379

Опубликована: Окт. 10, 2023

Язык: Английский

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