The SBR start-up performing simultaneous removal of organics, nitrogen and phosphorus from aniline wastewater: Pollutant removal efficiency and microbial community succession

Yang, Ming; Ma, Fang; Xie, Yongjiang; Li, Lu; Xue, Yingwen

doi:10.1080/26395940.2021.1924079

Cited by 10 publications

(4 citation statements)

References 28 publications

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“…Genera such as Acinetobacter , Unclassified Cryomorphaceae , Caulobacterales , and ASSO_13 were primarily affected by COD and phosphate concentration. The functional groups of Acinetobacter could potentially play a crucial role in pollutant reduction in the system, such as denitrifying phosphate-accumulating organisms . Additionally, the relative abundance of Acinetobacter in real cattle wastewater (SBR 3) was observed to be higher than that in synthetic wastewater (SBR2) under optimal conditions.…”

Section: Resultsmentioning

confidence: 99%

“…The functional groups of Acinetobacter could potentially play a crucial role in pollutant reduction in the system, such as denitrifying phosphate-accumulating organisms. 63 Additionally, the relative abundance of Acinetobacter in real cattle wastewater (SBR 3) was observed to be higher than that in synthetic wastewater (SBR2) under optimal conditions. Cryomorphaceae, a family of bacteria in the order Flavobacteriales, were responsible for EPS production.…”

Section: Acs Esandt Watermentioning

confidence: 94%

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Efficient Treatment and Simultaneous Energy Recovery from Cattle Wastewater by the Micro-Aerated UASB and SBR Coupled System

Xu,

Huang,

et al. 2023

ACS EST Water

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The present study introduces a coupled system comprising an upflow anaerobic sludge blanket (UASB) and a sequencing batch reactor (SBR) to treat intensive cattle farming wastewater. The results confirmed that the optimal conditions for UASB were an organic load rate of 9.98 kg-COD m–3·day–1, a C/N ratio of 22, and a hydraulic retention time (HRT) of 1.5 h. For the SBR reactor, the optimal conditions are a dissolved oxygen (DO) concentration of 6.08 mg L–1 and the S2 aeration mode. Under these optimal conditions, the study achieved anaerobic and aerobic sludge granules (0.25–0.5 and 0.5–0.75 mm) with excellent properties due to the cooperation of a functional microbial community, including Synergistetes, Thermotogae, Acidobacteria, Proteobacteria, Chloroflexi, and Hyd24–12 in UASB and Paracoccus, Proteobacteria, Chloroflexi, and Acinetobacter in SBR. This hybrid system contributed 94% of chemical oxygen demand (COD), 90% of NH4 +-N, 90% of TN, and 61% of TP. Additionally, it achieved 18% net energy recovery from the real cattle wastewater, indicating that the UASB–SBR-coupled system holds potential as an approach for treating and recovering energy from cattle wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Acs Esandt Watermentioning

confidence: 94%

Efficient Treatment and Simultaneous Energy Recovery from Cattle Wastewater by the Micro-Aerated UASB and SBR Coupled System

Xu,

Huang,

et al. 2023

ACS EST Water

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“…Portibacter can grow and attach to the surface of biofilms [55] and can decompose various organic macromolecules [56]. As an indigenous genus in activated sludge, Ferruginibacter is the main strain involved in the degradation of organic matter [57]. Polaromonas has an excellent ability to metabolize a variety of organic compounds and can efficiently degrade organic pollutants [58].…”

Section: Survival Of Rhodococcusmentioning

confidence: 99%

Effects of Bisphenol A Stress on Activated Sludge in Sequential Batch Reactors and Functional Recovery

Shao

Tian

Meng³

et al. 2022

Applied Sciences

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This study assessed the toxic effects of bisphenol A (BPA) on the microbial community and the function of activated sludge in sequencing batch reactors (SBRs). The toxicity of BPA was mitigated through dosing sludge with Rhodococcus Req-001. BPA reduced the biomass of sludge, and the proportion of viable bacteria decreased with the aggravation of BPA pollution. BPA affected the secretion of extracellular polymeric substances (EPSs), increased the ratio of polysaccharide to protein, and deteriorated the sedimentation performance of sludge. BPA decreased the abundances of functional bacteria involved in the degradation of organic matter and water purification, including Polaromonas, Dechloromonas, and Nitrospira, and the water purification capacity of the reactor decreased. Req-001 enhanced the BPA removal efficiency by 15%, and increased ammonia nitrogen and phosphorus removal by 8.8% and 22.7%, respectively. The functional recovery ability of the sludge system and the high removal ability of Req-001 make it a promising specie for use in BPA bioremediation. This study combined the effect of BPA on activated sludge and reactor performance with the microbial community, clarified the toxic mechanism of BPA on activated sludge, and therefore provides a theoretical basis and potential solutions to help WWTPs cope with the toxic effects of BPA.

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“…Chiayiivirga has been identified as a major genus in multiple wastewater treatment systems, with the ability to degrade organic matter [31], which may come from extracellular polymers and dead bacteria. Ferruginibacter was found to be tolerant to the inhibition effect of aniline and played an important role in pollutant reduction [32]. Truepera had a significant effect on changes in the abundance of ARGs in the system [33].…”

Section: Biofilm Microbial Communitiesmentioning

confidence: 99%

Nitrogen removal and metabolic pathways of nitrifying coal ash propelled by temperature change under high nitrogen loading

Liu

Xin

Liu³

et al. 2022

Environmental Engineering Research

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Coal ash, owing to its cost-effectiveness and greater adhesion with nitrifiers, has been used as a carrier for immobilizing nitrifiers when treating wastewater with a low C/N ratio and high nitrogen loading. Various environmental conditions significantly affect the nitrogen metabolic pathways of nitrifying coal ash. In this study, the nitrogen metabolic pathways of nitrifying coal ash propelled at different temperatures were investigated to evaluate the impact of seasonal variation on nitrifying coal ash. Results showed average NH4 + -N effluent concentrations increased with temperature, and reached 3.37, 5.16, and 76.06 mg N/L with 1158 mg N/L influent under 15 ℃, 25 ℃, and 35 ℃ systems. The total nitrogen removal rate at a cooling temperature of 15 ℃ was higher than that at 25 ℃ and 35 ℃. Further analysis showed Nitrosomonas and Nitrobacter were enhanced, whereas a significant evolution of autotrophic denitrifiers, Acidovorax, was enriched at 15 ℃. An in-depth investigation of N-metabolism pathways suggested higher temperatures of 25 ℃ and 35 ℃ reduced the abundance of key genes involved in ammonia oxidation (amoABC, hao) and nitrite oxidation (narGH). Network analysis between N-metabolic functional genes and genera presented stronger relevance and richer sources between nitrifiers/denitrifiers and nitrification/denitrification-associated genes under cooler temperatures.

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The SBR start-up performing simultaneous removal of organics, nitrogen and phosphorus from aniline wastewater: Pollutant removal efficiency and microbial community succession

Cited by 10 publications

References 28 publications

Efficient Treatment and Simultaneous Energy Recovery from Cattle Wastewater by the Micro-Aerated UASB and SBR Coupled System

Efficient Treatment and Simultaneous Energy Recovery from Cattle Wastewater by the Micro-Aerated UASB and SBR Coupled System

Effects of Bisphenol A Stress on Activated Sludge in Sequential Batch Reactors and Functional Recovery

Nitrogen removal and metabolic pathways of nitrifying coal ash propelled by temperature change under high nitrogen loading

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