#bluegreen street Neptunigatan, Malmö

The new blue-green street, Neptunigatan, has been created in Malmö to link the old city center and the newly developed district of Västra hamnen. Neptunigatan is the first phase of an extensive project named Gäddorna, which aims to transform public areas into multifunctional streetscapes.

OnOne of the main requirements given to us by the municipality was to manage all the stormwater that falls within the catchment of the street. That is done with use of rain gardens (biofilters). Rain gardens use nature-based principles to manage water quality and quantity. They retain water close to where it falls and make it available as a source for plant irrigation.

In order to improve rain garden water quality, we have collaborated with Luleå University specifically to focus on the filters inside the rain gardens. The filters are composed of plants and substrate loaded with biochar, a carbonized biomass. This combination achieves a high level of cleaning by supporting natural processes in separating pollutants from contaminated water before it reaches the aquifer.

#bluegreengrey systems create an attractive green buffer between pedestrians, cyclists and vehicles so that everyone can move safely through the street.