Water Talks April 2023 - Monitoring and Managing N2O emissions from WWTPs







Free of charge – Exclusively for members of Danish Export Water Tech

Jesper Kjelds Head of Water Tech danish export / dansk eksport
Head of Water Tech Jesper Kjelds +45 6120 1699
Kristina Strunge Nygaard Member Relations Coordinator danish export / dansk eksport
Project Consultant Kristina Strunge Nygaard +45 3171 0313

Water Talks #3 - Monitoring and Managing N2O emissions from WWTPs
Water Resource Recovery Facilities (WRRFs) contribute significantly to the global greenhouse gas (GHG) stock through the emissions of nitrous oxide (N2O), and the increase of the wastewater N2O emission factor (EFN2O) by IPCC2019 underlines this. Learnings from long-term monitoring campaigns confirm that N2O emissions vary significantly and emphasize the need for conducting exhaustive on-site monitoring of the N2O emissions. To mitigate the inherent water sector emission without compromising effluent quality, it becomes highly relevant to promote reliable online monitoring and control strategies targeted at understanding and reducing N2O emissions from WRRFs.

Mikkel Holmen Andersen from Unisense A/S will present and show +4 years of continuous N2O measurements, examples of GHG management, and how regulation can be a driver for data driven N2O control strategies to significantly reduce emissions.


Water Talks – Learn from and challenge your network colleagues in the WaterTech Network
Water Talks is your opportunity to debate, knowledge-share and learn from your network colleagues without having to start the car - simply sign up and log-on on for a full hour of discussions and debate.

During 2023 Water Tech will host a series of online Water Talks where we will talk about hot topics in the water industry. Each Water Talk will centre around an interesting topic and start out with a 15min opening talk from a thought leader. After the talk (often provocative) the floor is open for discussion and debate. A Water Talk session will have duration of 45 to 60 minutes.

Meet the Speaker
  • Mikkel Holmen Andersen

    Mikkel Holmen Andersen, PhD, Chief Technology Officer, Unisense A/S

    Lead the development and proof-of-concept of the world’s only dissolved nitrous oxide sensor for wastewater monitoring and GHG emission control leading to the spin-off company Unisense Environment. Managing a highly specialized team of electronic and software engineers in the design and production of high-end measurement systems. Working extensively with equipment for environmental monitoring for wastewater N2O mitigation controllers and modelling focused on the sensor technology, including novel aeration, COD, and deammonification controls with real-time GHG monitoring.


  • Please log in 5 min. before the session for technical start-up and image-/sound testing.
  • Water Talks will be held through Teams with sound and image, so that we can see each other and have a productive dialogue.
  • Each Water Talk session is scheduled for 45-60 minutes incl. wrapping up.
  • Each session will include a short presentation from the speaker and the floor is afterwards yours to discuss the topic of the day.
  • The meeting is an informal platform for you to share knowledge or ask your network colleagues questions related to a specified topic.