Integrating conventional nitrogen removal with anammox in wastewater treatment systems: Microbial metabolism, sustainability and challenges

Al‐Hazmi, Hussein E.; Hassan, Gamal K.; Maktabifard, Mojtaba; Grubba, Dominika; Majtacz, Joanna; Mąkinia, Jacek

doi:10.1016/j.envres.2022.114432

Cited by 47 publications

(18 citation statements)

References 181 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conventionally, NOB can grow at high DO set points >0.7 mg O 2 L −1 . 54 In this study, PN was innovatively maintained even after the restoration of a high DO.…”

Section: Aob Species Coexist To Establish Acidic Pn In Sbrmentioning

confidence: 95%

Dynamic Simulation of Nitrifying Microbial Communities for Establishing Acidic Partial Nitritation in Suspended Activated Sludge

Xue,

Zheng,

Cheng

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Acidic partial nitritation (PN) is a promising technology to achieve low-cost and energy-efficient shortcut nitrogen removal from wastewater. However, a comprehensive understanding of the acidic PN under dynamic changes of pH in a sequencing batch reactor (SBR) is still lacking. In this study, we successfully established acidic PN (NO2 – accumulation ratio >80%) under dynamic pH variation from 7.0 to 4.5 in a lab-scale SBR. By accumulating in situ free nitrous acid (FNA) generation based on the dynamic pH change, acidic PN maintained stability even at a low NH4 + concentration of 100 mg N L–1. The microbial community analysis revealed that two ammonium-oxidizing bacteria (AOB) genera, Nitrosospira and Nitrosomonas, successfully coexisted and cooperated during acidic PN. None of the species of nitrite-oxidizing bacteria (NOB) showed adaptation to intermittent inhibition of in situ FNA even under high DO conditions (>4.0 mg O2 L–1). Furthermore, we innovatively incorporated the classic nitrification model with the growth and decay of different nitrifying bacterial species and their inhibition by pH, FNA, and free ammonia (FA) to predict the nitrifying microbial communities shifting for establishing acidic PN. The extended model was calibrated by using short-term batch experiments and was validated by using long-term dynamic data of the nitrifying microbial community during SBR operation. The validated model was further used to identify feasible influent conditions for the SBR PN process, including influent HCO3 – concentration, NH4 + concentration and molar ratio (HCO3/NH4 +). Outcomes from this study support the optimal design of acidic PN-based short-cut nitrogen removal processes for future application.

show abstract

“…Conventionally, NOB can grow at high DO set points >0.7 mg O 2 L −1 . 54 In this study, PN was innovatively maintained even after the restoration of a high DO.…”

Section: Aob Species Coexist To Establish Acidic Pn In Sbrmentioning

confidence: 95%

Dynamic Simulation of Nitrifying Microbial Communities for Establishing Acidic Partial Nitritation in Suspended Activated Sludge

Xue,

Zheng,

Cheng

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The DO requirements in traditional nitrification and denitrification processes range from 1.0 to 7.0 mg/L. Under fully aerobic operating conditions, the optimum DO requirement is 6.0–7.0 mg/L, but 1.0–4.0 mg/L under anoxic-aerobic conditions [ 104 ]. Zhang et al [ 103 ] studied changes in NH 4 + , NO 2 − , and NO 3 − concentrations in the reactor under different cathodic DO values.…”

Section: Nitrogen Removal Processmentioning

confidence: 99%

A Comprehensive Review on Wastewater Nitrogen Removal and Its Recovery Processes

Zhou

Zhu

et al. 2023

IJERPH

View full text Add to dashboard Cite

Discharging large amounts of domestic and industrial wastewater drastically increases the reactive nitrogen content in aquatic ecosystems, which causes severe ecological stress and biodiversity loss. This paper reviews three common types of denitrification processes, including physical, chemical, and biological processes, and mainly focuses on the membrane technology for nitrogen recovery. The applicable conditions and effects of various treatment methods, as well as the advantages, disadvantages, and influencing factors of membrane technologies, are summarized. Finally, it is proposed that developing effective combinations of different treatment methods and researching new processes with high efficiency, economy, and energy savings, such as microbial fuel cells and anaerobic osmotic membrane bioreactors, are the research and development directions of wastewater treatment processes.

show abstract

“…The critical aim of wastewater treatment is to eliminate organic matter and remove nutrients (S, N and P), suspended solids, and soluble contaminants from wastewater 104–108 . At all events, the wastewater treatment processes consist of the physical processes (primary treatment), biological processes (secondary treatment), flocculation sedimentation, sand filtration, and membrane filtration efficient as the physiochemical process (tertiary treatment) for pathogen removal from wastewater.…”

Section: Treatment Of Covid‐19 Contaminated Wastewatermentioning

confidence: 99%

“…The critical aim of wastewater treatment is to eliminate organic matter and remove nutrients (S, N and P), suspended solids, and soluble contaminants from wastewater. [104][105][106][107][108] At all events, the wastewater treatment processes consist of the physical processes (primary treatment), biological processes (secondary treatment), flocculation sedimentation, sand filtration, and membrane filtration efficient as the physiochemical process (tertiary treatment) for pathogen removal from wastewater. Additionally, based on, 109 it is important to highlight that the approaches, all of which use sand filters for infection removal in the handwash-wastewater treatment of COVID-19, will become more efficient if the use of biological processes and/or physical filtration is made.…”

Section: Treatment Of Covid-19 Contaminated Wastewatermentioning

confidence: 99%

Diving boldly into COVID‐19 contaminated wastewater: Eyes at nanotechnology‐assisted solutions

Al‐Hazmi,

Kot‐Wasik,

Shokrani

et al. 2023

Clinical and Translational Dis

Self Cite

View full text Add to dashboard Cite

Several studies have been directed to find scalable, swift, accurate, and costeffective strategies for detecting, monitoring, and treating coronavirus disease 2019 . Indeed, the lack of a fast and practical method for detecting the infected regions makes decision-making challenging to combat the critical pandemic-struck situations. The probable 'wrong', or rather inadequate, decisions not only have a boomerang effect on the economy but also can lead to an increase in the number of infected individuals, degree of hospitalization,This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Integrating conventional nitrogen removal with anammox in wastewater treatment systems: Microbial metabolism, sustainability and challenges

Cited by 47 publications

References 181 publications

Dynamic Simulation of Nitrifying Microbial Communities for Establishing Acidic Partial Nitritation in Suspended Activated Sludge

Dynamic Simulation of Nitrifying Microbial Communities for Establishing Acidic Partial Nitritation in Suspended Activated Sludge

A Comprehensive Review on Wastewater Nitrogen Removal and Its Recovery Processes

Diving boldly into COVID‐19 contaminated wastewater: Eyes at nanotechnology‐assisted solutions

Contact Info

Product

Resources

About