Sollebrunns avloppsreningsverk - Advanced Wastewater Treatment in Sollebrunn, Sweden

Sollebrunns avloppsreningsverk is an advanced wastewater treatment plant located in Sollebrunn, Alingsås municipality, Västra Götaland County, Sweden. The plant serves a population of approximately 4,554 and has a designed capacity of 3,750 cubic meters per day, with a current discharge volume of 714.89 cubic meters per day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in Sweden under the EU Urban Waste Water Treatment Directive. Sweden applies stringent standards for sensitive areas, including the Baltic Sea catchment, where nutrient removal is critical to combat eutrophication. The plant discharges treated wastewater into local watercourses that eventually drain into the Göta älv river system and ultimately the Kattegat, a part of the North Sea. This downstream environment supports diverse aquatic life and is important for regional water quality, as the Göta älv is a major river in southwestern Sweden.

The treated effluent from Sollebrunns avloppsreningsverk flows into local streams that are part of the Göta älv drainage basin. The Göta älv discharges into the Kattegat, a sea area between Sweden and Denmark that is ecologically sensitive due to nutrient loading from agricultural and urban runoff. The advanced treatment at this plant helps reduce the risk of eutrophication in downstream waters, supporting biodiversity and water quality in the region.