Key insights

• Understanding, predicting, and mitigating nitrous oxide emissions is crucial as utilities across Canada strive to reduce their carbon footprint.
• Monitoring and measuring of nitrous oxide at the Duffin Creek Water Pollution Control Plant will inform actions that support safe, cost-effective services that have low emissions.
• Effective aeration controls are important to support the mitigation of nitrous oxide emissions from wastewater treatment processes, as shown through literature and field studies.
• Insights from this work highlight operational conditions that could contribute to nitrous oxide emissions, and the associated opportunities to reduce nitrous oxide emissions through process optimization. Examples include preventing oxygen ingress into the preanoxic zone and improving aeration control to reduce control errors.

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