Enhanced simultaneous nitrogen and phosphorus removal from low COD/TIN domestic wastewater through nitritation-denitritation coupling improved anammox process with an optimal Anaerobic/Oxic/Anoxic strategy

Deng, Liyan; Peng, Yongzhen; Li, Jianwei; Gao, Ruitao; Li, Wenyu; Du, Rui

doi:10.1016/j.biortech.2020.124526

Cited by 59 publications

(3 citation statements)

References 45 publications

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“…In some wastewater treatment plants, nitrification occurs in a non‐detectable DO environment (Applegate et al, 1980; Daigger & Littleton, 2000). Besides, some studies realized PN with DO value at 0.2–0.5 mg L −1 (Deng et al, 2021; Gilbert et al, 2015; Jiang et al, 2019; Zhang, Peng, et al, 2021) and even at 0.1 mg L −1 (Landreau et al, 2020) in a lab scale reactor with synthetic wastewater. It is possible that specific AOB would convert

{NH}_4^{+}

{NO}_2^{-}

with low DO.…”

Section: Resultsmentioning

confidence: 99%

“…It took more than 200 days to obtain a relative abundance of Nitrosomonas up to 0.95% and 5.2%, respectively, when treating domestic wastewater and landfill leachate with reduced dissolved oxygen (DO < 1.5 mg·L −1 ). (Deng et al, 2021; Zhang et al, 2022). In conclusion, AOB and AnAOB coexist in a low‐oxygen reactor and would endure the presence of COD as a novel sewage treatment method.…”

Section: Resultsmentioning

confidence: 99%

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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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{NH}_4^{+}

{NO}_2^{-}

with low DO.…”

Section: Resultsmentioning

confidence: 99%

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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show abstract

“…Over the past few years, anammox under anoxic conditions has shown great promise. Specifically, denitrifying bacteria contribute NO 2 – through partial-denitrification (PD, NO 3 – to NO 2 – ), which is then utilized by anammox bacteria. − This anoxic integration has demonstrated high stability in removing NH 4 + and NO 3 – from synthetic sewage and municipal wastewater. − For instance, in an anoxic sequencing batch reactor (SBR), the nitrogen removal rate and efficiency reached 1.28 kg-N/(m 3 ·d) and 94.1%, respectively . These successes of anammox under anoxic conditions shed fresh light on upgrading the carbon-restricted anoxic zone.…”

Section: Introductionmentioning

confidence: 99%