Characteristics of methane and nitrous oxide emissions from the wastewater treatment plant

Hwang, Kum-Lok; Bang, Cheon-Hee; Zoh, Kyung-Duk

doi:10.1016/j.biortech.2016.05.047

Cited by 47 publications

(27 citation statements)

References 12 publications

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“…In the last years, many efforts have been devoted towards the understanding of the key mechanisms involved in N 2 O production and emission (Kampschreur et al, 2009;Quan et al, 2012;Rodriguez-Caballero and Pijuan, 2013;Stenstr€ om et al, 2014;Wu et al, 2014;Hwang et al, 2016;Mannina et al, 2016c). The reported studies demonstrated a huge variability of the N 2 O emission (from the 0.01% to 10% of the influent total nitrogen) (Yoshida et al, 2014), depending on the WWTPs operational conditions (Kampschreur et al, 2009;Law et al, 2012;Daelman et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Nitrous oxide from moving bed based integrated fixed film activated sludge membrane bioreactors

Mannina

Capodici

Cosenza

et al. 2017

Journal of Environmental Management

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a b s t r a c tThe present paper reports the results of a nitrous oxide (N 2 O) production investigation in a moving bed based integrated fixed film activated sludge (IFAS) membrane bioreactor (MBR) pilot plant designed in accordance with the University of Cape Town layout for biological phosphorous removal. Gaseous and liquid samples were collected in order to measure the gaseous as well as the dissolved concentration of N 2 O. Furthermore, the gas flow rate from each reactor was measured and the gas flux was estimated. The results confirmed that the anoxic reactor represents the main source of nitrous oxide production. A significant production of N 2 O was, however, also found in the anaerobic reactor, thus indicating a probable occurrence of the denitrifying phosphate accumulating organism activity. The highest N 2 O fluxes were emitted from the aerated reactors (3.09 g N 2 OeN m À2 h À1 and 9.87 g N 2 OeN m À2 h À1 , aerobic and MBR tank, respectively). The emission factor highlighted that only 1% of the total treated nitrogen was emitted from the pilot plant. Furthermore, the measured N 2 O concentrations in the permeate flow were comparable with other reactors. Nitrous oxide mass balances outlined a moderate production also in the MBR reactor despite the low hydraulic retention time. On the other hand, the mass balance showed that in the aerobic reactor a constant consumption of nitrous oxide (up to almost 15 mg N 2 O h À1 ) took place, due to the high amount of stripped gas.

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Section: Introductionmentioning

confidence: 99%

Nitrous oxide from moving bed based integrated fixed film activated sludge membrane bioreactors

Mannina

Capodici

Cosenza

et al. 2017

Journal of Environmental Management

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“…The carbon dioxide concentration was determined by a thermal conductivity detector (TCD-GC) (Guérin et al, 2007). While nitrous oxide was analysed using a gas chromatograph with an electron capture detector (Hwang et al, 2016).…”

Section: Ghgs Sample Analysis Methodsmentioning

confidence: 99%

Insight into greenhouse gases emissions from the two popular treatment technologies in municipal wastewater treatment processes

Nguyen

Ngo

Guo

et al. 2019

Science of The Total Environment

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Due to the impact of methane, carbon dioxide and nitrous oxide on global warming, the quantity of these greenhouse gases (GHG) emissions from municipal wastewater treatment plants (WWTPs) has attracted more and more attention. Consequently, GHG emssions from the two popular treatment technologies: anaerobic/ anoxic/ oxic (AAO) process and sequencing batch reactor (SBR) should be properly identified and discussed toward the current situation in developing countries. Direct and indirect carbon dioxide (with and/or without including in Intergovernmental Panel on Climate Change (IPCC) report) are all discussed in this article. This literature study observed that a quantity of total carbon dioxide emissions from SBR (374 g/m 3 of wastewater) was double that of AAO whilst ten per cent of these was direct carbon dioxide. Methane emitted from an SBR was 0.50 g/m 3 wastewater while 0.18 g CH 4 /m 3 wastewater was released from an AAO. The level of nitrous oxide from AAO and SBR accounted for 0.97 g/m 3 wastewater and 4.20 g/m 3 wastewater, respectively.Although these results were collected from different WWTPs and where influent was in various states, GHGs emitted from both biological units and other treatment units in various processes are significant. The results also revealed that aerated zone is the major contributing factor in a wastewater treatment plant to the large amount of GHG emissions.

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“…The gas analysis can be carried out using a variety of analysers or spectrometry approaches, but the use of infrared analysers is reported to be the preferred approach given the broad N 2 O measurement range (Law et al, 2012). Chamber methods can also be used to measure the release of CH 4 from treatment units (Hwang et al, 2016).…”

Section: Direct Measurementmentioning

confidence: 99%

Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

2022

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The water sector is in the middle of a paradigm shift from focusing on treatment and meeting discharge permit limits to integrated operation that also enables a circular water economy via water reuse, resource recovery, and system level planning and operation. While the sector has gone through different stages of such revolution, from improving energy efficiency to recovering renewable energy and resources, when it comes to the next step of achieving carbon neutrality or negative emission, it falls behind other infrastructure sectors such as energy and transportation. The water sector carries tremendous potential to decarbonize, from technological advancements, to operational optimization, to policy and behavioural changes. This book aims to fill an important gap for different stakeholders to gain knowledge and skills in this area and equip the water community to further decarbonize the industry and build a carbon-free society and economy. The book goes beyond technology overviews, rather it aims to provide a system level blueprint for decarbonization. It can be a reference book and textbook for graduate students, researchers, practitioners, consultants and policy makers, and it will provide practical guidance for stakeholders to analyse and implement decarbonization measures in their professions. ISBN: 9781789061789 (Paperback) ISBN: 9781789061796 (eBook) ISBN: 9781789061802 (ePUB)

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Characteristics of methane and nitrous oxide emissions from the wastewater treatment plant

Cited by 47 publications

References 12 publications

Nitrous oxide from moving bed based integrated fixed film activated sludge membrane bioreactors

Nitrous oxide from moving bed based integrated fixed film activated sludge membrane bioreactors

Insight into greenhouse gases emissions from the two popular treatment technologies in municipal wastewater treatment processes

Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

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