Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study

Mannina, Giorgio; Morici, Claudia; Cosenza, Alida; Trapani, Daniele Di; Ødegaard, Hallvard

doi:10.1016/j.bej.2016.04.010

Cited by 30 publications

(9 citation statements)

References 28 publications

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“…3a). This result is in agreement with previous experiences where a significant correlation between salinity and N 2 O production/emission was found (Tsuneda et al, 2005;Mannina et al, 2016c).…”

Section: Gaseous N 2 O-n Concentration and Emissionsupporting

confidence: 94%

Nitrous oxide emissions in a membrane bioreactor treating saline wastewater contaminated by hydrocarbons

Mannina

Cosenza

Trapani

et al. 2016

Bioresource Technology

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Section: Gaseous N 2 O-n Concentration and Emissionsupporting

confidence: 94%

Nitrous oxide emissions in a membrane bioreactor treating saline wastewater contaminated by hydrocarbons

Mannina

Cosenza

Trapani

et al. 2016

Bioresource Technology

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“…Further details can be found in the literature [22,23]. (86 days) [22,24]; Phase (II) Pre-denitrification MBR, testing the effect of the salinity increase from 12 to 20 g NaCl·L …”

Section: Preliminary Resultsmentioning

confidence: 99%

Towards A New Decision Support System for Design, Management and Operation of Wastewater Treatment Plants for the Reduction of Greenhouse Gases Emission

Caniani

Esposito

Gori

et al. 2015

Water

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Abstract:The increasing attention paid to the environment has led to a reduction in the emissions from wastewater treatment plants (WWTPs). Moreover, the increasing interest in the greenhouse gas (GHG) emissions from WWTPs suggests that we reconsider the traditional tools used for designing and managing WWTPs. Indeed, nitrous oxide, carbon dioxide and methane can be emitted from wastewater treatment, significantly contributing to the greenhouse gas (GHG) footprint. The reduction of energy consumption as well as GHG emission are of particular concern for large WWTPs which treat the majority of wastewater in terms of both volume and pollution load. Nowadays, there is an increasing need to develop new tools that include additional performance indicators related to GHG emissions and energy consumption as well as traditional effluent quality parameters. OPEN ACCESSWater 2015, 7 5600 Energy consumption, in fact, can be considered as an indirect source of GHGs. This paper presents the development of an ongoing research project aiming at setting-up an innovative mathematical model platform for the design and management of WWTPs. The final goal of the project by means of this platform is to minimize the environmental impact of WWTPs through their optimization in terms of energy consumptions and emissions, which can be regarded as discharged pollutants, sludge and GHGs.

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“…Samples from liquid phase as well as head space were withdrawn from each reactor and analyzed to determine the N 2 OeN concentration in accordance with Mannina et al (2016b). Furthermore, nitrous oxide emission factor were assessed in accordance with Tsuneda et al (2005) expressing the emitted nitrous oxide as a percentage of nitrogen fed to the pilot plant.…”

Section: Gas Sampling and Measurementsmentioning

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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Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study

Cited by 30 publications

References 28 publications

Nitrous oxide emissions in a membrane bioreactor treating saline wastewater contaminated by hydrocarbons

Nitrous oxide emissions in a membrane bioreactor treating saline wastewater contaminated by hydrocarbons

Towards A New Decision Support System for Design, Management and Operation of Wastewater Treatment Plants for the Reduction of Greenhouse Gases Emission

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

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