Stormwater&Sewers events

Stormwater&Sewers seminars spring 2025

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. 27 Non-target analysis of micropollutants in BDT water (bathing, dishwashing and laundry water) with gas and liquid chromatography

22-nd of April 2025 at 10:00 - 11:00

Levien Melse Opens in new window., PhD student at Luleå University of Technology, presents results from a study on the occurrence of micropollutants in BDT water (bathing, dishwashing and laundry water). Through a non-targeted screening, micropollutants have been identified in BDT water from two innovative residential areas: Oceanhamnen in Helsingborg and Klosterenga in Oslo.

Language: English

• Sign up here External link, opens in new window.

No. 28 Mapping of PFAS in stormwater

20-th of May 2025 at 10:00 - 11:00. Combined with Drizzle seminar

On this seminar Hannah Johansson Opens in new window., industrial PhD candidate, Växjö Municipality and Luleå University of Technology, will present her research on PFAS in stormwater from six Swedish cities. She will talk about the occurrence and variation of PFAS substances found in stormwater facilities and other stormwater bodies, as well as discuss the variation of PFAS based on different types of land use and catchments.

Language: Swedish

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Dissertations and licentiate seminars

Licentiate seminar in Urban Water Engineering –

Utsav Adhikari

🕘 5 May 2025, 09:00–11:00

🏠 C305 Luleå University of Technology and online with Zoom

Language: English

Thesis:

• Blue-green infrastructure for climate resilience - quantifying stormwater hydrology impacts External link, opens in new window.

External reviewer: Professor Malte Henrichs, University of applied Sciences Münster, Germany

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

Thesis summary:

Blue-Green Infrastructure (BGI) is an effective strategy for managing urban stormwater, offering benefits like mitigating urban flooding and enhancing groundwater recharge. However, its performance often falls short during extreme rainfall events driven by climate change. Additionally, implementing BGI in urban catchments presents challenges due to space limitations and the complexity of selecting and designing suitable solutions.

This licentiate thesis addresses these challenges through three studies:

1. Hydrological Impact of BGI: The first study investigates the performance of various BGI designs in urban environments with diverse land uses. It shows that engineered BGI alternatives are more effective in reducing flooding in residential areas with more available space, while natural BGI solutions perform better in densely developed urban areas.
2. Modeling Reliability: The second study assesses the reliability of the SWMM (Storm Water Management Model) for simulating bioretention systems by comparing calibrated and uncalibrated models to observed data. The findings confirm that SWMM, when calibrated, accurately represents critical hydrological processes.
3. Design Optimization of Bioretention Systems: The third study uses the calibrated SWMM model to analyze 54 bioretention design configurations. It identifies key design variables, such as ponding depth, hydraulic conductivity, filter media composition, and storage connection, that influence stormwater management. The study emphasizes the importance of balancing trade-offs between daily volume reduction and overflow management during intense rainfall events.

This research advances the understanding of BGI design and implementation at both catchment and local scales, providing actionable recommendations for improving stormwater management in urban areas under changing climatic conditions.

• Contact: Utsav Adhikari Opens in new window.