Alsterbro Wastewater Treatment Plant
At Alsterbro sewage treatment plant, wastewater is purified in three steps. The first purification step consists of the mechanical removal of the coarse solids in the rotary screen. The next processing step is the biological treatment in biorotor. In the last purification step, chemical precipitation to remove phosphorous. The flocculant used is polyaluminiumhydroxiklorid.
Then, the treated water out of the Alsterån. Sludge from both the biological and chemical purification pumped into reed beds, where lush reeds contributes to the degradation of the sludge, among others. alia by reed plants favors oxygen supply down in the sludge.
Koholmen Wastewater Treatment Plant in The Municipality of Karlskrona
Koholmens Wastwater Treatment Plant is designed for 57,000 inhabitants and is the heart of Karlskrona system for the resort’s sewage management. To this place is headed wastewater from Karlskrona urban areas, from the neighboring islands, as well as from the sewage treatment plant at Sanda Island and from the population at Sturkö Island.
Wetland Park Kalmar Dämme – For a cleaner Baltic Sea
Törnebybäcken, a stream which drains most of the Kalmar countryside just west of Kalmar, is one of the municipality’s most nutrient-loaded water bodies. Kalmar airport contributes to the supply of mainly nitrogen that is used to keep the runways unfrozen.
Through a unique partnership between CAA and Kalmar municipality, a large proportion of mainly nitrogen, but also phosphorus that would otherwise be added to the West Lake (a bay of the Baltic Sea), are deleted in the landscaped wetland park Kalmar Dämme. It is nature’s own treatment plant, where a whole series of natural processes occur that reduce nitrogen and phosphorus.