Insight into enrichment of anaerobic ammonium oxidation bacteria in anammox granulation under decreasing temperature and no strict anaerobic condition: Comparison between continuous and sequencing batch feeding strategies

Wang, Wenqiang; Liu, Dong; Li, Shuai; Wei, Ziqing; Zeng, Hong‐Yan; Zhang, Jie

doi:10.1016/j.scitotenv.2021.147601

Cited by 21 publications

(3 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was a positive correlation between Acidobacteria , Actinobacteria , and Bacteroidetes and PS concentrations, as well as a negative correlation between them and PN, HA, and total EPS content. According to the study of Wang, Li, et al (2021), the phylum of Acidobacteria , Actinobacteria , and Bacteroidetes were involved in the denitrification process. Similarly, at the genus level, denitrifying bacteria of Aridibacter , Chryseolinea , and Hyphomicrobium (Guo et al, 2018; Wang, Li, et al, 2021) also displayed a negative correlation with the PN, HA, as well as total EPS production.…”

Section: Resultsmentioning

confidence: 99%

“…According to the study of Wang, Li, et al (2021), the phylum of Acidobacteria , Actinobacteria , and Bacteroidetes were involved in the denitrification process. Similarly, at the genus level, denitrifying bacteria of Aridibacter , Chryseolinea , and Hyphomicrobium (Guo et al, 2018; Wang, Li, et al, 2021) also displayed a negative correlation with the PN, HA, as well as total EPS production. It is reasonable to assume that the denitrifying bacteria‐affiliated bacteria may not support the production of the PN and HA.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Extracellular polymeric substances and microbial community shift during the start‐up of a single‐stage partial nitritation/anammox process

Men,

Liu,

Wang

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

A sequencing batch reactor (SBR) was operated to investigate variations of extracellular polymeric substances (EPS) and microbial community during the start‐up of the single‐stage partial nitritation/anammox (SPN/A) process at intermittent aeration mode. The SPN/A system was successfully started on day 34, and the nitrogen removal efficiency and total nitrogen loading rate were 82.29% and 0.31 kg N/(m3·day), respectively. Furthermore, the relationship between the protein secondary structures and microbial aggregation was strongly related. The α‐helix/ (β‐sheet + random coil) ratios increased obviously from 0.20 ± 0.03 to 0.23 ± 0.01, with the sludge aggregation mean size increased from 56 to 107 μm during the start‐up of SPN/A. During the start‐up of SPN/A, Candidatus Kuenenia was the primary anammox bacteria, whereas Nitrospira was the main functional bacteria of nitrite‐oxidizing bacteria. Correlation between the microbial community and EPS components was performed. The EPS and microbial community played important roles in keeping stable nitrogen removal and the formation of sludge granules.Practitioner Points Intermittent aeration strategy promoted SPN/A system start‐up. EPS composition and protein secondary structure were related with the sludge disintegration and aggregation. Microbial community shift existed and promoted the stability of sludge and reactor performance during SPN/A start‐up.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Extracellular polymeric substances and microbial community shift during the start‐up of a single‐stage partial nitritation/anammox process

Men,

Liu,

Wang

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…For the treatment of landfill leachate, a variety of technologies, which include biological treatment such as activated sludge and fluidized bed reactor process, chemical treatments such as Fenton process and chemical precipitation, and physical–chemical treatments such as absorption and membrane process to treat landfill leachate, were developed by the researchers ( Teng et al, 2021 ). Compared to the high cost, high requirements, sensitive operating conditions, and a large amount of excess sludge of these methods, biological enhancement is known as a cost-effective choice for treating high concentration organic wastewater ( Abuabdou et al, 2020 ; Wang et al, 2021 ; Xu et al, 2021 ). When specific functional bacteria are used for biological enhancement of high concentration organic wastewater treatment systems, free-degrading bacteria have a variety of defects, such as low mechanical strength, low cell density, difficulty in separating biomass effluents, susceptibility to water flow patterns, and limitation in application of practical leachate treatment ( Mulla et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced treatment of landfill leachate by biochar-based aerobic denitrifying bacteria functional microbial materials: Preparation and performance

Song

Li²,

Wang³

et al. 2023

Front. Microbiol.

View full text Add to dashboard Cite

ObjectiveIn this work, polyvinyl alcohol (PVA) and sodium alginate (SA) were used as entrapped carriers and Artemisia argyi stem biochar (ABC) was used as an absorption carrier to immobilize aerobic denitrifying bacteria screened from landfill leachate, thus a new carbon-based functional microbial material (PVA/SA/ABC@BS) was successfully prepared.MethodsThe structure and characteristics of the new material were revealed by using a scanning electron microscope and Fourier transform infrared spectroscopy, and the performance of the material for treating landfill leachate under different working conditions was studied.ResultsABC had abundant pore structures and that the surface contained many oxygen-containing functional groups, carboxyl groups, and amide groups, etc. and it had good absorbing performance and strong acid and alkali buffering capacity, which was beneficial to the adhesion and proliferation of microorganisms. After adding ABC as a composite carrier, the damage rate of immobilized particles was decreased by 1.2%, and the acid stability, alkaline stability, and mass transfer performance were increased by 9.00, 7.00, and 56%, respectively. When the dosage of PVA/SA/ABC@BS was 0.017g/ml, the removal rates of nitrate nitrogen (NO3−-N) and ammonia nitrogen (NH4+-N) were the highest, which were 98.7 and 59.4%, respectively. When the pH values were 11, 7, 1, and 9, the removal rates of chemical oxygen demand (COD), NO3−-N, nitrite nitrogen (NO2−-N) and NH4+-N reached the maximum values, which were 14.39, 98.38, 75.87, and 79.31%, respectively. After PVA/SA/ABC@BS was reused in 5 batches, the removal rates of NO3−-N all reached 95.50%.ConclusionPVA, SA and ABC have excellent reusability for immobilization of microorganisms and degradation of nitrate nitrogen. This study can provide some guidance for the great application potential of immobilized gel spheres in the treatment of high concentration organic wastewater.

show abstract

Insight into nitrogen removal performance of anaerobic ammonia oxidation in two reactors: Comparison based on the aspects of extracellular polymeric substances and microbial community

Yang

Jiang²,

Xu³

et al. 2022

Biochemical Engineering Journal

View full text Add to dashboard Cite

Insight into enrichment of anaerobic ammonium oxidation bacteria in anammox granulation under decreasing temperature and no strict anaerobic condition: Comparison between continuous and sequencing batch feeding strategies

Cited by 21 publications

References 69 publications

Extracellular polymeric substances and microbial community shift during the start‐up of a single‐stage partial nitritation/anammox process

Extracellular polymeric substances and microbial community shift during the start‐up of a single‐stage partial nitritation/anammox process

Enhanced treatment of landfill leachate by biochar-based aerobic denitrifying bacteria functional microbial materials: Preparation and performance

Insight into nitrogen removal performance of anaerobic ammonia oxidation in two reactors: Comparison based on the aspects of extracellular polymeric substances and microbial community

Contact Info

Product

Resources

About