Comprehensive Review of Control and Operational Strategies for Partial Nitration/ANAMMOX System

Nikita, Saxena; Nawaz, Alam; Lee, Moonyong

doi:10.1021/acs.iecr.9b01670

Cited by 16 publications

(5 citation statements)

References 71 publications

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“…3a). The wastewater treatment practice showed that such a high NH 4 + content could not be easily removed by the conventional nitrification/denitrification process, whereas a complex operating condition and energy would be required for the partial nitritation/anammox process 19,20 .…”

Section: Discussionmentioning

confidence: 99%

Ammonium and organic carbon co-removal under feammox-coupled-with-heterotrophy condition as an efficient approach for nitrogen treatment

Nguyen

et al. 2021

Sci Rep

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Nitrification is the rate limiting step in the nitrogen removal processes since nitrifiers have high oxygen demand, but poorly compete with aerobic heterotrophs. In a laboratory-scaled system, we investigated a process of ammonium oxidation under ferric-iron reducing condition (feammox) in the presence of organic carbon using influents with high NH4+ and COD contents, and ferrihydrite as the only electron acceptor. Batch incubations testing influents with different NH4+ and COD concentrations revealed that the [COD]/[NH4+] ratio of 1.4 and the influent redox potential ranging from − 20 to + 20 mV led to the highest removal efficiencies, i.e. 98.3% for NH4+ and 58.8% for COD. N2 was detected as the only product of NH4+ conversion, whereas NO2− and NO3− were not detected. While operating continuously with influent having a [COD]/[NH4+] ratio of 1.4, the system efficiently removed NH4+ (> 91%) and COD (> 54%) within 6 day retention time. Fluorescence in situ hybridization analyses using Cy3-labeled 16S rRNA oligonucleotide probes revealed that gamma-proteobacteria dominated in the microbial community attaching to the matrix bed of the system. The iron-reduction dependent NH4+ and COD co-removal with a thorough conversion of NH4+ to N2 demonstrated in this study would be a novel approach for nitrogen treatment.

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Section: Discussionmentioning

confidence: 99%

Ammonium and organic carbon co-removal under feammox-coupled-with-heterotrophy condition as an efficient approach for nitrogen treatment

Nguyen

et al. 2021

Sci Rep

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“…The pH value hardly changed during the anoxic stirring phase, which is contrary to the certified conclusion that the anammox process consumes hydrogen ions (Zhang et al, 2017). A previous study demonstrated that PN generates hydrogen ions (Saxena et al, 2019). Therefore, we believe that this phenomenon may be due to a specific AOB oxidizing

{NH}_4^{+}

{NO}_2^{-}

under extremely oxygen‐deficient conditions (anoxic stirring phase, DO < 0.1 mg L −1 ), that is, PN and anammox take place simultaneously.…”

Section: Resultsmentioning

confidence: 99%

Achieving stable anammox process and revealing shift of bacteria during the start‐up in landfill leachate treatment

Jia

et al. 2023

Water Environment Research

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Partial nitrification‐anammox (PN/A) is an energy‐efficient technology for nitrogen removal in landfill leachate treatment. Numerous studies have reported successful implementation of the PN/A process and its stable operation under laboratory conditions. One of the primary challenges in PN/A engineering applications is the mass of the seed sludge required for start‐up. This study examined the PN/A using a sequence batch reactor (SBR) inoculating a common mixture to treat landfill leachate. After 70 days of operation, the system successfully realized a one‐stage PN/A process and maintained a stable ammonium ()italicNH4+$$ \left({NH}_4^{+}\right) $$ removal efficiency of 97.65% ± 1%, where the effluent of NH4+$$ {NH}_4^{+} $$ and nitrate (NO3−$$ {NO}_3^{-} $$) were less than 4 ± 1.5 mg L−1 and 10 mg L−1. In addition, the relative abundances of Ca. Kuenenia and Ca. Brocadia, which are typical anaerobic ammonia‐oxidizing bacteria (AnAOB), increased from 0.08% to 3.99% (70 days) and 0.01% to 0.45%, respectively. The relative abundances of ammonia‐oxidizing bacteria (AOB) Nitrosomonas and Nitrosospira increased from 0.9% to 2.89% and 0.007% to 0.1% (70 days), respectively. Both AnAOB and AOB are important niches of the system. Practitioner Points The research realized PN/A rapidly by inoculating common mixture sludge. The experiment successfully enriched AnAOB from 0.09% to 3.89% within 70 days. The article revealing the ecological roles of AOB and AnAOB in the landfill leachate treatment.

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“…A suitable use of online monitoring equipment can better reflect the status of the whole system and reduce labor costs. Because the irregular changes in water quality, DO, temperature, pH, and other parameters cause different degrees of influence on the anammox treatment efficiency, the purpose of installing online monitoring is to achieve the maximum treatment efficiency of WWTPs by controlling the parameters (Saxena, Nawaz, & Lee, 2019). Meanwhile, controlling strategies play an equally important role in the system.…”

Section: Future Needs For Feasible Applicationmentioning

confidence: 99%

“…Meanwhile, controlling strategies play an equally important role in the system. Currently, several supervisory, feedback, feedforward, and advanced operating methods have been studied to regulate certain parameters (Saxena et al., 2019). Meyer and Pöpel (2003) evaluated the contribution of DO concentration in the system, and the needed airflow could be decreased by applying fuzzy‐logic‐based control strategies; the strategies possess extensive applicability and the operating characteristics can be adjusted during operation.…”

Section: Future Needs For Feasible Applicationmentioning

confidence: 99%

Advances and challenges of mainstream nitrogen removal from municipal wastewater with anammox‐based processes

Huang

et al. 2020

Water Environment Research

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Anaerobic ammonium oxidation (anammox) is a novel process of deammonification that exhibits superior ecological and economic potential compared to that of traditional heterotrophic processes. Although this process has been successfully implemented in treating high‐strength nitrogen‐contaminated wastewater, it still faces many challenges in treating mainstream municipal wastewater. This review aims to provide an overview of the status and challenges of mainstream anammox‐based processes. The different configurations and crucial factors are discussed in this review. Finally, the future needs for feasible application are stated. Practitioner points Factors restricting mainstream application of anammox‐based processes are reviewed. Control strategies for selecting and maintaining anammox bacteria are discussed. Recent advances in nitrite production via partial nitrification or denitrification are summarized. Future needs for the feasible application of anammox‐based nitrogen removal technology for mainstream municipal wastewater treatment are outlined.

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Comprehensive Review of Control and Operational Strategies for Partial Nitration/ANAMMOX System

Cited by 16 publications

References 71 publications

Ammonium and organic carbon co-removal under feammox-coupled-with-heterotrophy condition as an efficient approach for nitrogen treatment

Ammonium and organic carbon co-removal under feammox-coupled-with-heterotrophy condition as an efficient approach for nitrogen treatment

Achieving stable anammox process and revealing shift of bacteria during the start‐up in landfill leachate treatment

Advances and challenges of mainstream nitrogen removal from municipal wastewater with anammox‐based processes

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