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The experimental wetland research facility is positioned close to Plönningeskolan in the countryside outside Halmstad.
Experiments are performed to reveal factors and mechanisms affecting pollutant removal in wetlands. The experimental wetland research facility consists of 18 wetland units in which water flow can be measured and controlled separately. The number of wetland units makes replication of treatments possible, thus facilitating statistical evaluation of obtained results.
The 18 wetland basins have a similar shape. The area of each wetland basin at ground level is approximately 4 m * 10 m. The slope of the shores is 1:1. Water depth can be adjusted individually up to a maximum depth of 0.8 m.
Wetland units with emergent plants have been planted with Phragmites australis and Glyceria maxima. Wetland units with submerged plants were established with several species (e.g. Elodea and Myriophyllum sp). Wetlands with spontaneous development of vegetation have been colonized primarily with Typha latifolia and Potamogeton natans. The water distributed to the wetlands is groundwater with a nitrate-N concentration of approximately 10 mg N/l.