Treatment of Stormwater in a Constructed Stormwater Wetland (2025–2026)

Stormwater wetlands have the potential to remove both sediments and particle-bound pollutants and dissolved substances. However, there is still a lack of knowledge regarding the removal of emerging contaminants that have been increasingly studied in stormwater in recent years, such as dissolved/hydrophilic organic substances (e.g., PFAS) and previously often overlooked metals (e.g., Sb, V, W, Ti, and platinum group elements).

The aim of this project is to fill this knowledge gap. Sampling will be carried out at a newly constructed stormwater treatment wetland in Värpinge (Lund), which consists of a pond followed by a wetland. Sampling will be conducted by Luleå University of Technology in collaboration with VA SYD and Sweden Water Research during 2025-2026. Flow-proportional samples are planned to be taken at the inlet (stormwater), after pre-sedimentation, and after the wetland. The samples will be analyzed for PFAS (including TOP assay), PAHs, and other organic substances (such as 6PPD-quinone and benzothiazole), as well as the metals Sb, V, Ti, W, and platinum group elements (PGE).

The project is funded by the Swedish Environmental Protection Agency and is conducted in collaboration with the ISWIM project (link). The project partners are VA SYD and Sweden Water Research.