Proceedings

Going low on N2O with multiple measurement methods: PRESENTATION ONLY

Joe Kenyon, United Utilities, UK

Amanda Lake, Jacobs, UK

(free)

Greenhouse gases and wastewater treatment

Process Emissions make up 70% of our reported direct emissions

Nitrous oxide (N2O) GWP 298*

  • Produced during secondary treatment as part of nitrification & denitrification processes
  • Climate Change Committee (CCC): N2O is a major challenge that needs to be addressed. After agriculture, wastewater treatment is the main global source of anthropogenic N2O emissions
  • Current sector reporting methodology (Carbon Accounting Workbook) is likely to under report impact of process emissions
  • Alternative reporting method predicts higher impact, using emissions factors from Intergovernmental Panel on Climate Change (IPCC)

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