Key operating parameters affecting nitrogen removal rate in single-stage deammonification

Choi, Daehee; Cho, Sukhyun; Jung, Jin‐Young

doi:10.1016/j.chemosphere.2018.05.053

Cited by 38 publications

(5 citation statements)

References 42 publications

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“…However, due to the lack of organics in the influent, traditional biological nutrient removal efficiencies are always restricted, and it is difficult to obtain concentrations of N and P in the effluent that meet the discharge standard level Liu et al, 2016). To improve the nutrient removal efficiencies, many strategies have been suggested and attempted, such as changing the traditional treatment processes to deammonification processes, modifying the treatment systems and optimizing the operational parameters to effectively use the carbon sources (Choi et al, 2018;Rikmann et al, 2018;Zekker et al, 2015;Kim et al, 2011). Furthermore, adding external carbon sources is also an efficient method that has been studied widely by researchers in recent years (Choi et al, 2018;Guo et al, 2016;Liu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Nutrients removal performance and sludge properties using anaerobic fermentation slurry from food waste as an external carbon source for wastewater treatment

Tang

Wang

et al. 2019

Bioresource Technology

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Enhancement of nitrogen and phosphate removal using thermophilic fermentation slurry from food waste (FSFW) as external carbon source was investigated. Based on the batch tests, the soluble and particulate fractions of the FSFW acted as easily and slowly biodegradable carbon sources, respectively, and the fermented slurry showed the combined nutrients removal properties of soluble and solid organics. During the long-term operation of a sequencing batch reactor (SBR) with FSFW for wastewater treatment, the sludge particle size increased obviously, the bacterial metabolic capacity improved significantly, and some functional microorganisms were enriched selectively, which significantly promoted the nitrogen removal efficiency (approximately 90%) by enhancing the anoxic denitrification and simultaneous nitrification and denitrification (SND) processes. Moreover, high phosphate removal efficiency (above 98%) was achieved through the aerobic and anoxic phosphate accumulation processes. Thus, using the FSFW as supplementary carbon source is a suitable solution for both food waste disposal and wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Nutrients removal performance and sludge properties using anaerobic fermentation slurry from food waste as an external carbon source for wastewater treatment

Tang

Wang

et al. 2019

Bioresource Technology

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“…9a). Choi et al (2018) assessed the contribution of AMX, AOB, and DB to nitrogen removal according to granule size and found that the contribution of microbial activity to nitrogen removal was signi cantly in uenced by granule size. In the presence of COD, it was shown that the contribution of AMX to TN removal was higher for granule diameter larger than 1600 μm, whereas, for granule diameter smaller than 1600 μm, the contribution of AMX to nitrogen removal was unsatisfactory at any DO level (Fig.…”

Section: In Uence Of Combined Cod and Do On Tnr And The Analysis Of Microbial Communitiesmentioning

confidence: 99%

Model-based evaluation of the contribution of partial denitrification (PD) on the one-stage autotrophic nitrogen removal process

Zhang

Liu

et al. 2021

Preprint

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The nitrate produced by the one-stage partial nitritation-anammox (PN/A) process can be removed through partial denitrification (PD) by adding carbon source. In this study, a 1D multi-population biofilm model was developed to evaluate the contribution of partial denitrification on the one-stage autotrophic nitrogen removal process at influent NH4+ = 100 mg N/L. The dynamic simulation that was carried out to investigate the effect of nitrite-oxidizing bacteria (NOB) revealed that PD contributed to the reactor to obtain total nitrogen removal efficiency (TNR) of above 90% and the effluent nitrate was significantly decreased with the absence of NOB. However, PD decreased TNR of the one-stage PN/A process with the presence of NOB. Increased influent chemical oxygen demand (COD) widened the dissolved oxygen (DO) range required for high TNR whether NOB were present or not. The steady-state simulation results showed that NOB were always absent in the granules at high DO and COD levels and the optimum DO > 0.5 mg/L when influent COD was over 50 mg/L. Besides, higher influent COD/NH4+ (C/N) and larger granule diameter (diameter > 1600 µm) were contributed to widening the range of DO required for high TNR. The nitrogen removal contribution of anammox bacteria (AMX) was significantly higher than denitrification in the reactor.

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“…13 When the nitrogen removal process (or bacteria) is inhibited, adjusting to the appropriate HRT can effectively restore nitrogen removal performance (or bacterial activity). 12,130,131 4.2 Sludge 4.2.1 Sludge domestication. Anammox and partial deni-trication coupling methods can be divided into split and integrated processes.…”

Section: Conclusion and Evaluationmentioning

confidence: 99%

Anammox and partial denitrification coupling: a review

You

Wang

et al. 2020

RSC Adv.

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Key operating parameters affecting nitrogen removal rate in single-stage deammonification

Cited by 38 publications

References 42 publications

Nutrients removal performance and sludge properties using anaerobic fermentation slurry from food waste as an external carbon source for wastewater treatment

Nutrients removal performance and sludge properties using anaerobic fermentation slurry from food waste as an external carbon source for wastewater treatment

Model-based evaluation of the contribution of partial denitrification (PD) on the one-stage autotrophic nitrogen removal process

Anammox and partial denitrification coupling: a review

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