Stormwater&Sewers events

Stormwater&Sewers seminars 2026

The seminars are arranged as free Zoom webinars and open to anyone who is interested. However, registration is required to get a Zoom link. Sign up for the event using the link below each seminar.

No. 38 Integrated Nutrient Recovery from Blackwater Digestate

20 October 2026, 10:00-11:00

How can blackwater from toilets be turned into a practical fertiliser product?

In this presentation, Stephanie Rusch Fehrmann from Luleå University of Technology will present findings from her recent PhD thesis on nutrient recovery from blackwater digestate, produced after biogas production from source-separated blackwater collected with vacuum toilets.
Her research focuses on nitrogen stabilisation and low-grade heat concentration as key treatment steps to reduce volume, retain nutrients, and limit ammonia losses, highlighting their potential for producing fertiliser products for more circular sanitation systems

Registration is required, click here

No. 39 Sampling strategies for stormwater quality monitoring

10 November, 10:00-11:00

How frequently should you sample to ensure representative stormwater quality data and how many samples are needed for a good representation of the stormwater quality in a site?

In this presentation, Henriette Nishimwe, PhD candidate at Luleå University of Technology, will shares insights from her research on representative sampling for stormwater quality monitoring. She examines how sampling frequency and the number of samples affect accuracy of pollutant measurements, with focus on particles, and discusses findings from three catchments (commercial, residential, and roadway) in Luleå municipality, highlighting practical implications for monitoring design.

Registration is required, click here

No. 40 Which Metals Matter Most in Urban Runoff? Insights from a 20-Year Nationwide Risk Assessment over 182 events Across Sweden

08 December, 10:00-11:00

Urban runoff is a major pathway for metals and metalloids to enter aquatic environments, yet environmental risks vary strongly depending on land use, season, and metal speciation.

In this presentation Ali Beryani, Postdoctoral reseacher at Luleå University of Technology, will summarize findings from a nationwide Swedish meta-analysis based on 182 stormwater and snowmelt events collected over 20 years across 15 urban catchments. The study identifies which metals/metalloids pose the greatest ecological risks, how risks differ between dissolved and particulate fractions, and how seasonal conditions influence their mobility and bioavailability. Practical implications for monitoring, source control, and stormwater treatment strategies will also be discussed.

Registration is required, click here

Licentiate seminar in Urban Water Engineering – Letty Mora

🕘 18 September 2026, 13:00

🏠 C305 Luleå University of Technology and online with Zoom

Language: English

Thesis:

• Beyond Conventional Sewers – the Potential of Source-separating Wastewater Systems in the Expansion of Wastewater Infrastructure

Discussant: Associate Professor Jennifer McConville, Department of Energy and Technology, Environmental Engineering, Swedish University of Agricultural Sciences, Uppsala

Chair: Postdoctoral researcher Franz Kevin Geronimo, Division of Urban Water Engineering, Department of Civil Engineering and Natural Resources, Luleå University of Technology

• Contact: Letty Mora

For more information about link to Zoom, contact Peter.Rosander@ltu.se

Public defense of doctoral thesis in Urban Water Engineering - Stephanie Rusch Fehrmann

🕘 24 September 2026, 09:00

🏠 C305 Luleå University of Technology and online with Zoom

Language: English

Thesis: Integrated Nutrient Recovery from Blackwater Digestate: Processes, Modelling and Fertilizer Potential

Opponent: Professor Dr. Kai M. Udert, Department of Civil, Environmental, and Geomatic Engineering, ETH Zurich – Swiss Federal Institute of Technology, Dübendorf, Switzerland

Chair: Assistant Professor Alexandra Müller, Division of Urban Water Engineering, Department of Civil Engineering and Natural Resources, Luleå University of Technology, Luleå, Sweden

• Stephanie Rusch Fehrmann

For more information about link to Zoom, contact Peter.Rosander@ltu.se