Efficient transition from partial nitritation to partial nitritation/Anammox in a membrane bioreactor with activated sludge as the sole seed source

Huang, Xiaowu; Mi, Wenkui; Hong, Nian; Ito, Hiroaki; Kawagoshi, Yasunori

doi:10.1016/j.chemosphere.2020.126719

Cited by 29 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, the effluent NO 2 − ‐N decreased rapidly, while the effluent NO 3 − ‐N increased from 3.67 mg/L (on day 29) to 28.24 mg/L (on day 34). The utilization of NH 4 + ‐N and NO 2 − ‐N along with the production of NO 3 − ‐N in an anoxic section, which was a classic anammox phenomenon (Huang et al, 2020), demonstrating that partial nitritation and anammox occurred synergistic effects with anammox bacteria enrichment. On day 34, the ammonia nitrogen removal efficiency and NRE were achieved at 98.17% and 82.29%, respectively, which indicated that the SPN/A system was successfully started up.…”

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

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%

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

“…The PN/A process can save about 50% oxygen with low sludge generation, and no release of CO 2 into the air ( Huang et al, 2020 ). According to the available estimates, the PN/A process can save more than 90% of the operating cost ( Zhao et al, 2021 ).…”

Section: The Anammox Process For Nitrogen Removalmentioning

confidence: 99%

Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment

et al. 2021

View full text Add to dashboard Cite

The discharge of excess nitrogenous pollutants in rivers or other water bodies often leads to serious ecological problems and results in the collapse of aquatic ecosystems. Nitrogenous pollutants are often derived from the inefficient treatment of industrial wastewater. The biological treatment of industrial wastewater for the removal of nitrogen pollution is a green and efficient strategy. In the initial stage of the nitrogen removal process, the nitrogenous pollutants are converted to ammonia. Traditionally, nitrification and denitrification processes have been used for nitrogen removal in industrial wastewater; while currently, more efficient processes, such as simultaneous nitrification-denitrification, partial nitrification-anammox, and partial denitrification-anammox processes, are used. The microorganisms participating in nitrogen pollutant removal processes are diverse, but information about them is limited. In this review, we summarize the microbiota participating in nitrogen removal processes, their pathways, and associated functional genes. We have also discussed the design of efficient industrial wastewater treatment processes for the removal of nitrogenous pollutants and the application of microbiome engineering technology and synthetic biology strategies in the modulation of the nitrogen removal process. This review thus provides insights that would help in improving the efficiency of nitrogen pollutant removal from industrial wastewater.

show abstract

“…Current mainstream deammonification implementations include a variety of processes in laboratory and pilot scales including suspended, attached growth, or hybrid systems in single-stage or 2-stage reactors (e.g. Hoekstra et al 2018;Klaus 2019;Le et al 2019a;Huang et al 2020). Due to the slow growth rate of anammox bacteria (Valverde Pérez et al 2016;Lotti et al 2015), an anammox retention mechanism is required to allow for adequate solids retention time (SRT).…”

Section: Introductionmentioning

confidence: 99%

Mainstream short-cut N removal modelling: current status and perspectives

Kirim

McCullough

Bressani-Ribeiro

et al. 2024

Modelling for Water Resource Recovery

View full text Add to dashboard Cite

This work gives an overview of the state-of-the-art in modelling of short-cut processes for nitrogen removal in mainstream wastewater treatment and presents future perspectives for directing research efforts in line with the needs of practice. The modelling status for deammonification (i.e., anammox-based) and nitrite-shunt processes is presented with its challenges and limitations. The importance of mathematical models for considering N2O emissions in the design and operation of short-cut nitrogen removal processes is considered as well. Modelling goals and potential benefits are presented and the needs for new and more advanced approaches are identified. Overall, this contribution presents how existing and future mathematical models can accelerate successful full-scale mainstream short-cut nitrogen removal applications.

show abstract

Efficient transition from partial nitritation to partial nitritation/Anammox in a membrane bioreactor with activated sludge as the sole seed source

Cited by 29 publications

References 46 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

Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment

Mainstream short-cut N removal modelling: current status and perspectives

Contact Info

Product

Resources

About