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Multi-point monitoring of nitrous oxide emissions in three full-scale conventional activated sludge tanks in Europe

(2017) WATER SCIENCE AND TECHNOLOGY. 77(4). p.880-890
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Abstract
The large global warming potential of nitrous oxide (N2O) is currently of general concern for the water industry, especially in view of a new regulatory framework concerning the carbon footprint of water resource recovery facilities (WRRFs). N2O can be generated through different biological pathways and from different treatment steps of a WRRF. The use of generic emission factors (EF) for quantifying the emissions of WRRFs is discouraged. This is due to the number of different factors that can affect how much, when and where N2O is emitted from WRRFs. The spatial and temporal variability of three WRRFs in Europe using comparable technologies is presented. An economically feasible and user-friendly method for accounting for the contribution of anoxic zones via direct gas emission measurements was proven. The investigation provided new insights into the contribution from the anoxic zones versus the aerobic zones of biological WRRF tanks and proved the unsuitability of the use of a single EF for the three WRRFs. Dedicated campaigns for N2O emissions assessment are to be advised. However, similarities in the EF magnitude can be found considering treatment strategy and influent water composition.
Keywords
BIOMATH, activated sludge, GHG emissions, mixing, N2O, off-gas, WASTE-WATER TREATMENT, AMMONIA-OXIDIZING BACTERIA, ENRICHED NITRIFYING SLUDGE, N2O PRODUCTION, DISSOLVED-OXYGEN, TREATMENT-PLANT, REMOVAL, AERATION, INHIBITION, CULTURE

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Chicago
Bellandi, Giacomo, Jose Porro, Elisa Senesi, Cecilia Caretti, Simone Caffaz, Stefan Weijers, Ingmar Nopens, and Riccardo Gori. 2017. “Multi-point Monitoring of Nitrous Oxide Emissions in Three Full-scale Conventional Activated Sludge Tanks in Europe.” Water Science and Technology 77 (4): 880–890.
APA
Bellandi, G., Porro, J., Senesi, E., Caretti, C., Caffaz, S., Weijers, S., Nopens, I., et al. (2017). Multi-point monitoring of nitrous oxide emissions in three full-scale conventional activated sludge tanks in Europe. WATER SCIENCE AND TECHNOLOGY, 77(4), 880–890.
Vancouver
1.
Bellandi G, Porro J, Senesi E, Caretti C, Caffaz S, Weijers S, et al. Multi-point monitoring of nitrous oxide emissions in three full-scale conventional activated sludge tanks in Europe. WATER SCIENCE AND TECHNOLOGY. 2017;77(4):880–90.
MLA
Bellandi, Giacomo et al. “Multi-point Monitoring of Nitrous Oxide Emissions in Three Full-scale Conventional Activated Sludge Tanks in Europe.” WATER SCIENCE AND TECHNOLOGY 77.4 (2017): 880–890. Print.
@article{8581880,
  abstract     = {The large global warming potential of nitrous oxide (N2O) is currently of general concern for the water industry, especially in view of a new regulatory framework concerning the carbon footprint of water resource recovery facilities (WRRFs). N2O can be generated through different biological pathways and from different treatment steps of a WRRF. The use of generic emission factors (EF) for quantifying the emissions of WRRFs is discouraged. This is due to the number of different factors that can affect how much, when and where N2O is emitted from WRRFs. The spatial and temporal variability of three WRRFs in Europe using comparable technologies is presented. An economically feasible and user-friendly method for accounting for the contribution of anoxic zones via direct gas emission measurements was proven. The investigation provided new insights into the contribution from the anoxic zones versus the aerobic zones of biological WRRF tanks and proved the unsuitability of the use of a single EF for the three WRRFs. Dedicated campaigns for N2O emissions assessment are to be advised. However, similarities in the EF magnitude can be found considering treatment strategy and influent water composition.},
  author       = {Bellandi, Giacomo and Porro, Jose and Senesi, Elisa and Caretti, Cecilia and Caffaz, Simone and Weijers, Stefan and Nopens, Ingmar and Gori, Riccardo},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keywords     = {BIOMATH,activated sludge,GHG emissions,mixing,N2O,off-gas,WASTE-WATER TREATMENT,AMMONIA-OXIDIZING BACTERIA,ENRICHED NITRIFYING SLUDGE,N2O PRODUCTION,DISSOLVED-OXYGEN,TREATMENT-PLANT,REMOVAL,AERATION,INHIBITION,CULTURE},
  language     = {eng},
  number       = {4},
  pages        = {880--890},
  title        = {Multi-point monitoring of nitrous oxide emissions in three full-scale conventional activated sludge tanks in Europe},
  url          = {http://dx.doi.org/10.2166/wst.2017.560},
  volume       = {77},
  year         = {2017},
}

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