Simultaneous nitrification, denitrification and phosphorus removal in a sequencing batch reactor (SBR) under low temperature

Li, Can; Li, Shufeng; Ma, Tao; Zheng, Maosheng; Ni, Jinren

doi:10.1016/j.chemosphere.2019.04.185

Cited by 138 publications

(24 citation statements)

References 72 publications

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“…Compared with the control group, the richness of Propionivibrio, Geobacter, Pseudaeromonas, Aeromonas, and Tolumonas increased significantly after 7, 14, and 21 days. A recent study showed that, at low temperatures, Propionivibrio was a key member of the bacterial community that simultaneously removed nitrogen and phosphorus [36]. erefore, we also boldly predict that Propionivibrio plays an important role in the degradation of black-odor water; however, this hypothesis needs further verification.…”

Section: Discussionmentioning

confidence: 65%

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions

Xie

Wang

Zeng

et al. 2020

BioMed Research International

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In this study, a yeast strain with an outstanding NH3-N degradation ability was isolated from the sediment of a black-odor water channel in Guangdong Province, China. Based on phenotypic and phylogenetic analysis, this strain was identified as Pichia kudriavzevii GW1. The optimum conditions for NH3-N degradation by the GW1 strain were as follows: 0.3% inoculum concentration, 1.5 L/min aeration, pH 7, and a temperature of 35°C. Under optimized conditions, the GW1 strain degraded 95.5% of the NH3-N. The strain was then added to simulated black-odor water under optimal degradation conditions to investigate changes to the bacterial community over time. 16S rRNA sequencing of samples collected on days 0, 7, 14, and 21 showed that, in the presence of the GW1 strain, the relative abundances of the phyla Proteobacteria, Bacteroidetes, Chloroflexi, and Firmicutes increased in the black-odor water. In addition, the relative abundance of Propionivibrio, a known NH3-N degrading genus, increased. This study will facilitate the use of microbiological methods to repair black-odor water.

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Section: Discussionmentioning

confidence: 65%

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions

Xie

Wang

Zeng

et al. 2020

BioMed Research International

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“…Nevertheless, in the system with SDS and SDBS, the nitrate nitrogen content increased significantly during the reaction and nitrification and denitrification enhancement [29]. It was indicated that nitrification and denitrification have a great influence on the denitrification efficiency of the system [30][31][32]. The comparison of Figure 1a,d showed that that the concentration of NO 3 − -N is the highest, while the removal rate of NH 4 + -N is the lowest, in the presence of SDS.…”

Section: Removal Performance Analysismentioning

confidence: 94%

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

Huiru

Yang

2020

IJERPH

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Sodium dodecylbenzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS), as two anionic surfactants, have diffused into environments such as surface water and ground water due to extensive and improper use. The effects on the removal performance and microbial community of sequencing batch reactors (SBRs) need to be investigated in the treatment of saline wastewater containing 20 g/L NaCl. The presence of SDS and SDBS could decrease the removal efficiencies of ammonia nitrogen and total phosphorus, and the effect of SDS was more significant. The effect of surfactants on the removal mainly occurred during the aeration phase. Adding SDS and SDBS can reduce the content of extracellular polymeric substances (EPS). In addition, SDS and SDBS also can reduce the inhibition of high salinity on sludge activity. A total of 16 s of rRNA sequencing analysis showed that the addition of surfactants reduced the diversity of microbial communities; besides, the relative abundance value of the dominant population Proteobacteria increased from 91.66% to 97.12% and 93.48% when SDS and SDBS were added into the system, respectively.

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“…On the other hand, under low atmospheric pressure (72 kPa), the TIN removal rate of the H1 system in stage I (COD = 300 mg/L) and in stage II (COD = 200 mg/L) was 81.22% and 72.84%, respectively, both higher than that occurring in the L1 system under normal pressure. It may show that, although the DO content from the air into the water in the aerobic aeration stage was reduced, the SND often occurred efficiently under low oxygen pressure [35], thus the TIN removal rate was higher under lower atmospheric pressure. Similarly, under lower atmospheric pressure, the COD consumed by the external denitrification in H1 (COD dn ) was 8.36 mg/L and 13.30 mg/L, respectively, corresponding to the COD at 300 mg/L and 200 mg/L, which accounted for 9.39% and 31.89% of COD ana , Compared with that of L1, the amount of COD dn decreased.…”

Section: Effects Of Cod Concentrations On Organic Matter Removal In a Sndpr System Under Different Atmospheric Pressuresmentioning

confidence: 99%

Effect of Chemical Oxygen Demand Concentration on Nutrient Removal in Simultaneous Nitrification, Denitrification and Phosphorus Removal System in High-Altitude Areas

Zhao

Zhang

et al. 2021

Water

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The application of biological nitrogen and phosphorus removal processes in high-altitude areas faces severe challenges due to low temperature, low atmosphere pressure and low oxygen concentration. In this study, a simultaneous nitrification, denitrification and phosphorus removal (SNDPR) system was operated under low atmosphere pressure. The chemical oxygen demand (COD) concentrations in influent were decreased from 300 mg/L (stage I) to 200 mg/L (stage II), corresponding to the low COD concentration of sewage in high-altitude areas. The removal of COD and total phosphate was efficient at the H1 reactor (72 kPa). The removal rates of COD and total phosphate were 94.08% (stage I), 90.66% (stage II) and 98.43% (stage I), 99.34% (stage II), respectively, which were similar to L1 (100 kPa). The removal rates of total inorganic nitrogen and simulation nitrification and denitrification were from 81.21% (stage I) and 59.48% (stage I) to 72.86% (stage II) and 31.95% (stage II), respectively, which were also improved compared to L1. Cycle experiment results indicated that the activity of phosphorus accumulating organisms was enhanced, while the ammonia oxidation process was inhibited under low atmosphere pressure.

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Simultaneous nitrification, denitrification and phosphorus removal in a sequencing batch reactor (SBR) under low temperature

Cited by 138 publications

References 72 publications

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

Effect of Chemical Oxygen Demand Concentration on Nutrient Removal in Simultaneous Nitrification, Denitrification and Phosphorus Removal System in High-Altitude Areas

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Simultaneous nitrification, denitrification and phosphorus removal in a sequencing batch reactor (SBR) under low temperature

Cited by 138 publications

References 72 publications

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH3-N Degradation Conditions

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH3-N Degradation Conditions

Performance and Biomass Characteristics of SBRs Treating High-Salinity Wastewater at Presence of Anionic Surfactants

Effect of Chemical Oxygen Demand Concentration on Nutrient Removal in Simultaneous Nitrification, Denitrification and Phosphorus Removal System in High-Altitude Areas

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Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions

Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH₃-N Degradation Conditions