Research on Stormwater Quality
Urban areas contain numerous sources of pollutants contributing to diffuse pollution. During dry weather, pol-lutants and particles build up on surfaces in the urban environment.
During wet weather and snowmelt these pollutants are washed off and leached, e.g. from roofs, facades, roads and pavements, and transported in the storm sewers to receiving waters. In the stormwater sewers and transportation system, wash-out from catch basins, pipes and ponds may additionally contribute to the release of previously trapped sediment and asso-ciated pollutants. Two aspects of stormwater quality are of particular importance: (i) entry of harmful chemicals or microbiological agents into urban stormwater, and (ii) remedial measures, usually in the form of treatment, to prevent further distribution in the environment. In order to develop treatment solutions, knowledge about the content of the water to be treated is needed.
Theme leader and co-leader: Heléne Österlund and Alexandra Müller
Stormwater ponds
Improved sedimentation and characterization and risks of accumulated sediment.
Sources of stormwater pollution and stormwater characterization
Avrinning från byggnader har länge studerats med fokus på metaller som koppar och zink. Nu behövs forskning även om andra material och organiska ämnen.
The effect of swer pipe material on stormwater quality
LTU has conducted a pilot study on how different pipe materials affect stormwater quality. Large differences in stormwater quality were observed for concrete, galvanized steel and plastic pipes.
Microplastics in stormwater
One pollutant in water that has received increasing attention in recent years is microplastics, which are of course also found in stormwater.
Reducering av dagvattenföroreningar i svackdiken
Gräsbevuxna ytor och annan grön infrastruktur såsom svackdiken och översilningsytor har inte bara funktionen att leda bort dagvatten utan kan också spela en viktig roll i att reducera föroreningar i
Surface efficient stormwater treatment
De material vi bygger våra städer och samhällen med samt de aktiviteter vi utför, såsom bilkörning och trafik, bidrar ibland till kraftigt förorenat dagvatten som behöver renas innan det släpps ut