Treatment of secondary effluent by a novel tidal-integrated vertical flow constructed wetland using raw sewage as a carbon source: Contribution of partial denitrification-anammox

Zhan, Xuan; Yang, Yongqiang; Chen, Fanrong; Wu, Shijun; Zhu, R. S.

doi:10.1016/j.cej.2020.125165

Cited by 46 publications

(11 citation statements)

References 59 publications

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“…The most abundant denitrifiers were from the family of Rhodocyclaceae, which have been found in other PdNA systems (Campolong et al, 2019). Denitrisoma, also found in other PdNA systems (Campolong et al, 2019;Ma et al, 2020;Zhan et al, 2020), was identified at a relatively low abundance of 2-2.6% in the filters.…”

Section: Pdna Phase: Microbial Communitysupporting

confidence: 64%

“…Only one genus of AnAOB was found in the filters, Candidatus Brocadia, which has been frequently identified in PdNA systems (Cui et al, 2020; Du et al, 2019; Fofana, Huynh et al, 2022; Lu et al, 2021; Schoepflin et al, 2022; Wang et al, 2020; Wang, Xu et al, 2020; Zhan et al, 2020; Zheng, et al, 2020). The relative abundance of Candidatu s Brocadia (2–5%) obtained in the filters was significantly higher than other one‐stage PdNA filters (0.7–1.0%) (Cao et al, 2020; Lu et al, 2021), most likely due to the higher loading rates at full‐scale.…”

Section: Resultsmentioning

confidence: 99%

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Full‐scale transition from denitrification to partial denitrification–anammox (PdNA) in deep‐bed filters: Operational strategies for and benefits of PdNA implementation

Fofana

Parsons

Long

et al. 2022

Water Environment Research

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This study shows for the first time more than 2 years of operation of a mainstream anammox application at full-scale under temperate climate. This implementation of partial denitrification-anammox (PdNA) in deep bed filters at the HRSD York River treatment plant was demonstrated to achieve the benefits of shortcut nitrogen removal without nitrite oxidizing bacteria (NOB) out-selection. The transition from denitrification to PdNA filters required bleeding ammonium to the filters using an optimized ammonium versus NOx (AvN) control in the upstream aeration tanks and maintaining a nitrate residual in the filter effluent through feedforward/feedback control. The latter actions led to savings of 85% in methanol, 100% in alkalinity, and 35% in capacity enhancement. Up to 6 mg NH 4 + -N/L with an average of 2.2 ± 0.98 mg NH 4 + -N/L was removed through the anammox pathway, which accounted for about 15% of the overall plant nitrogen removal. Anammox enrichment was confirmed by activity testing and molecular analysis. The large excess of AnAOB capacity present in the filters (5-10 times more than normal operation) resulted in stable and reliable operation through winter conditions and showed potential for further intensification. Practitioner Points• For the first time, long-term mainstream anammox was established fullscale through PdNA implementation in deep-bed filters. • PdNA implementation required upstream aeration control optimization to provide a blend of ammonium and nitrate to the filters.• Efficient anammox enrichment and retention resulted in reliable PdNA performance under different seasonal and influent conditions.All authors are members of the Water Environment Federation (WEF).

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Section: Pdna Phase: Microbial Communitysupporting

confidence: 64%

Section: Resultsmentioning

confidence: 99%

Full‐scale transition from denitrification to partial denitrification–anammox (PdNA) in deep‐bed filters: Operational strategies for and benefits of PdNA implementation

Fofana

Parsons

Long

et al. 2022

Water Environment Research

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“…It has been widely recognized that Chloroflexi plays an important role in denitrification systems. From the analysis results at the genus level, the bacterial genera with a significant increase in abundance included Denitratisoma [30] and Bacillus [31], which can degrade organic matter and have denitrification functions. Among them, Bacillus has a stronger affinity for ammonia nitrogen and nitrous nitrogen in addition to a faster growth rate, making it the dominant genus [32].…”

Section: Discussionmentioning

confidence: 99%

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

Zhang

Fang

et al. 2021

Water

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The efficient removal of carbon (COD) and nitrogen (NH3-N) is vital to improving tailwater from municipal wastewater treatment plants. In this study, denitrification and decarburization bacteria with stable removal efficiencies were introduced into a membrane bioreactor (MBR) for 45 days of field experiments in a QJ Wastewater Treatment Plant (Hangzhou, China) to enhance carbon and nitrogen removal. After adding the decarbonization microorganisms into the denitrification reactor, COD removal increased from 31.2% to 80.2%, while compared to the same MBR with only denitrification microorganisms, the removal efficiency of NH3-N was greatly increased from 76.8% to 98.6%. The results of microbial analysis showed that the cooccurrence of Proteobacteria and Bacillus with high abundance and diverse bacteria, such as Chloroflexi, with autotrophic decarburization functions might account for the synchronous high removal efficiency for NH3-N and COD. This technology could provide a reference for industrial-scale wastewater treatment with the goal of simultaneous nitrogen and carbon removal.

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“…Tan et al 24 found that the coexistence of nitrifiers (e.g., Nitrosomonas) and heterotrophic nitrification-aerobic denitrification bacteria (e.g., Ferribacterium) contributed to NH 4 + -N and NO 3 − -N removal in a two-stage tidal flow constructed wetland. Zhan et al 25 showed that partial denitrification-anammox (e.g., Denitratisoma and Candidatus Brocadia) played a significant role in removing N from a novel tidal-integrated vertical flow constructed wetland. Thus, it is crucial to characterize and understand microbial communities to reveal the N removal mechanism and maintain system stability.…”

Section: Introductionmentioning

confidence: 99%

The nitrogen removal performance and microbial communities in a pilot multistage trickling constructed wetland for purifying polluted groundwater

Dan

Ling

et al. 2022

Environ. Sci.: Water Res. Technol.

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Treatment of secondary effluent by a novel tidal-integrated vertical flow constructed wetland using raw sewage as a carbon source: Contribution of partial denitrification-anammox

Cited by 46 publications

References 59 publications

Full‐scale transition from denitrification to partial denitrification–anammox (PdNA) in deep‐bed filters: Operational strategies for and benefits of PdNA implementation

Full‐scale transition from denitrification to partial denitrification–anammox (PdNA) in deep‐bed filters: Operational strategies for and benefits of PdNA implementation

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

The nitrogen removal performance and microbial communities in a pilot multistage trickling constructed wetland for purifying polluted groundwater

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