New stormwater management solutions in pilot projects

During 2018, two new pilot projects have been established in the Centre related to stormwater management. Pilot project FV505 will look at cleaning of contaminated stormwater from road. A full-scale multi-stage treatment plant has been built on the site of Multiblokk (Skjæveland Gruppen) south of Sandnes in connection with Statens Vegvesen building a new bridge and supply route to new industrial area and a connecting road south to Kvernaland, Bryne and later to E39. The bridge and the supply road are expected to have a traffic volume corresponding to 12,000 ÅDT and since the nearby recipient is vulnerable it is necessary to clean the road water. Klima 2050 will use the pilot project to document the cleaning effect and look at efficiency over time. The experience will form the basis for new guidelines for the design, operation and maintenance of this type of stormwater solutions.

The other new pilot project is associated with the upgrading of Trondheim square and adjacent streets. A new stormwater treatment plant has been built consisting of an infiltration system and a delayed magazine. The innovation lies in the fact that the plant is designed so that the delay magazine is only used when the infiltration system has reached its maximum capacity. For Klima 2050, the aim of the pilot project is to demonstrate and document the capacity of the new facility.

The further development of the Skjævelandsgruppen's innovation, the prefabricated Alma raingarden, has already resulted in a bachelor's thesis and a master's thesis, while the next master's student has already started his preparations. In October, it was also known that Alma raingarden is one of six innovations selected by the EU program BRIGAID and the Climate Innovation Window to receive financial support and expert assistance.