N2O emission in full-scale wastewater treatment: Proposing a refined monitoring strategy

Gruber, Wenzel; Villez, Kris; Kipf, Marco; Wunderlin, Pascal; Siegrist, Hansruedi; Vogt, Liliane; Joss, Adriano

doi:10.1016/j.scitotenv.2019.134157

Cited by 63 publications

(67 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, these monitoring campaigns might represent observations of the same phenomenon. Given the reported correlation of N 2 O emissions of NO 2 − concentration in two studies ( Daelman et al., 2015 ; Gruber et al., 2020 ), we hypothesize that seasonally increased NO 2 − concentrations in the biological reactors of these treatment plants are directly and functionally linked to the N 2 O emissions patterns. During both campaigns at Uster WWTP high N 2 O emissions were observed after substantially diminished NOB activity resulting in NO 2 − accumulation in the effluent, which suggests a high contribution of denitrification (nitrifier or heterotrophic) to N 2 O production ( Domingo-Felez et al., 2016 ; Wunderlin et al., 2013 ).…”

Section: Discussionmentioning

confidence: 90%

“…The yearly N 2 O emissions at Uster WWTP are an example for a broadly observed pattern of seasonally driven N 2 O emission from WWTP. Most previous N 2 O monitoring campaigns at WWTP observed an emission pattern peaking in spring and reaching its minimum in autumn, such as the Kralingseveer WWTP ( Daelman et al., 2015 ), Avedøre WWTP ( Chen et al., 2019 ), Lucerne WWTP and Altenrhein WWTP ( Gruber et al., 2020 ). Hence, these monitoring campaigns might represent observations of the same phenomenon.…”

Section: Discussionmentioning

confidence: 99%

“…Biological nitrogen removal during wastewater treatment can cause high N 2 O fluxes to the atmosphere with a significant contribution to global N 2 O emissions ( Vasilaki et al., 2019 ). In wastewater treatment plants (WWTP), emissions ranging from very low amounts up to a few percent of the total nitrogen load were shown to exhibit a strong seasonal pattern ( Gruber et al., 2020 ). Typically, emissions exhibited a seasonal emission patter with high emissions between March and June, and low emissions between July and November ( Chen et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…To address our research questions, we combined an extensive N 2 O measurement campaign over 1.5 years and 16S rRNA sequencing for microbial community analysis during two seasonal N 2 O emission episodes. Using the floating flux chamber method, as described in Gruber et al. (2020) , N 2 O emissions were assessed on six parallel SBR reactors in a Swiss WWTP.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

et al. 2021

Self Cite

View full text Add to dashboard Cite

Highlights Strong correlation of nitrite peaks, seasonal N 2 O emissions and microbial dynamics. Reactors with a stable microbial community do not exhibit nitrification failure. AOB are quite stable, NOB disappear in disturbed reactors. Standard engineering approaches do not improve plant performance. Loss and gain of NOB activity coincides with loss and gain of filamentous bacteria.

show abstract

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The sectoral activity responsible for this high uncertainty was the wastewater treatment and discharge (913%) and this remains one of the most uncertain sources of N2O having the highest emissions in the waste sector. Emissions are known to vary markedly in space and time even within a single wastewater treatment plant (Gruber et al, 2020), a fact that only recently has been properly accounted for in the inventory guidelines (IPCC, 2019a). However, the total emissions from the waste 640 sector account for only 4.4 % of the total EU27+UK N2O emissions (excl.…”

Section: Nghgi Estimates Compared With Bottom-up Inventoriesmentioning

confidence: 99%

The consolidated European synthesis of CH₄ and N₂O emissions for EU27 and UK: 1990–2018

Petrescu¹,

Qiu²,

Ciais³

et al. 2020

Preprint

View full text Add to dashboard Cite

Abstract. Reliable quantification of the sources and sinks of greenhouse gases, together with trends and uncertainties, is essential to monitoring the progress in mitigating anthropogenic emissions under the Paris Agreement. This study provides a consolidated synthesis of CH4 and N2O emissions with consistently derived state-of-the-art bottom-up (BU) and top-down (TD) data sources for the European Union and UK (EU27+UK). We integrate recent emission inventory data, ecosystem process-based model results, and inverse modelling estimates over the period 1990–2018. BU and TD products are compared with European National GHG Inventories (NGHGI) reported to the UN climate convention secretariat UNFCCC in 2019. For uncertainties, we used for NGHGI the standard deviation obtained by varying parameters of inventory calculations, reported by the Member States following the IPCC guidelines recommendations. For atmospheric inversion models (TD) or other inventory datasets (BU), we defined uncertainties from the spread between different model estimates or model specific uncertainties when reported. In comparing NGHGI with other approaches, a key source of bias is the activities included, e.g. anthropogenic versus anthropogenic plus natural fluxes. In inversions, the separation between anthropogenic and natural emissions is sensitive to the geospatial prior distribution of emissions. Over the 2011–2015 period, which is the common denominator of data availability between all sources, the anthropogenic BU approaches are directly comparable, reporting mean emissions of 20.8 Tg CH4 yr−1 (EDGAR v5.0) and 19.0 Tg CH4 yr−1 (GAINS), consistent with the NGHGI estimates of 18.9 ± 1.7 Tg CH4 yr−1. TD total inversions estimates give higher emission estimates, as they also include natural emissions. Over the same period regional TD inversions with higher resolution atmospheric transport models give a mean emission of 28.8 Tg CH4 yr−1. Coarser resolution global TD inversions are consistent with regional TD inversions, for global inversions with GOSAT satellite data (23.3 Tg CH4yr−1) and surface network (24.4 Tg CH4 yr−1). The magnitude of natural peatland emissions from the JSBACH-HIMMELI model, natural rivers and lakes emissions and geological sources together account for the gap between NGHGI and inversions and account for 5.2 Tg CH4 yr−1. For N2O emissions, over the 2011–2015 period, both BU approaches (EDGAR v5.0 and GAINS) give a mean value of anthropogenic emissions of 0.8 and 0.9 Tg N2O yr−1 respectively, agreeing with the NGHGI data (0.9 ± 0.6 Tg N2O yr−1). Over the same period, the average of the three total TD global and regional inversions was 1.3 ± 0.4 and 1.3 ± 0.1 Tg N2O yr−1 respectively, compared to 0.9 Tg N2O yr−1 from the BU data. The TU and BU comparison method defined in this study can be operationalized for future yearly updates for the calculation of CH4 and N2O budgets both at EU+UK scale and at national scale. The referenced datasets related to figures are visualized at https://doi.org/10.5281/zenodo.4288969 (Petrescu et al., 2020).

show abstract

Estimating nitrous oxide emissions based on TN discharge from municipal wastewater treatment plants: A case study for the city of Xiamen, China

Bai

Jin

et al. 2023

Greenhouse Gases

View full text Add to dashboard Cite

Mitigation of nitrous oxide (N2O) emissions is of primary importance to meet the targets of reducing carbon footprints of wastewater treatment plants (WWTPs). This paper takes the N2O discharged from a case study of wastewater treatment plants as the main research object, and then develops a novel algorithm, which can accurately estimate the amount of N2O release, and then applies it to the local wastewater treatment plants. According to the results, the nitrous oxide emission flux and the emission factors (EFs) are discussed. The results include the following: (1) The total amount of N2O discharged from Xiamen wastewater treatment plants between 2018 and 2019 was 3881.29 kg and 3642.97 kg, respectively; (2) the production of N2O emissions based on the total nitrogen (TN) algorithm in the existing wastewater treatment factories in Xiamen was obtained based on the research EFs; and (3) by controlling other factors of WWTPs process such as chemical oxygen demand /nitrogen (COD)/ (N) ratio, dissolved oxygen (DO) concentration, pH value (the degree of concentration of hydrogen ions), and solids retention time (SRT) in the wastewater treatment process, selecting a secondary wastewater treatment process with an economical and reasonable approach can reduce N2O emissions in the wastewater treatment process. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

N2O emission in full-scale wastewater treatment: Proposing a refined monitoring strategy

Abstract: A. (2019). N2O emission in full-scale wastewater treatment: proposing a refined monitoring strategy. Science of the Total Environment, 134157 (24 pp.).

Cited by 63 publications

References 24 publications

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

The consolidated European synthesis of CH₄ and N₂O emissions for EU27 and UK: 1990–2018

Estimating nitrous oxide emissions based on TN discharge from municipal wastewater treatment plants: A case study for the city of Xiamen, China

Contact Info

Product

Resources

About

N2O emission in full-scale wastewater treatment: Proposing a refined monitoring strategy

Abstract: A. (2019). N2O emission in full-scale wastewater treatment: proposing a refined monitoring strategy. Science of the Total Environment, 134157 (24 pp.).

Cited by 63 publications

References 24 publications

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

Linking seasonal N2O emissions and nitrification failures to microbial dynamics in a SBR wastewater treatment plant

The consolidated European synthesis of CH4 and N2O emissions for EU27 and UK: 1990–2018

Estimating nitrous oxide emissions based on TN discharge from municipal wastewater treatment plants: A case study for the city of Xiamen, China

Contact Info

Product

Resources

About

The consolidated European synthesis of CH₄ and N₂O emissions for EU27 and UK: 1990–2018