Kvanums avloppsreningsverk - Advanced Wastewater Treatment in Kvänum, Sweden

Kvanums avloppsreningsverk is a municipal wastewater treatment plant located in Kvänum, Vara kommun, Västra Götalands län, Sweden. The plant serves a population of approximately 2,003 residents, classifying it as a small agglomeration under EU regulations. It is situated inland, more than 10 km from the coast, and treats wastewater from the local community. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 5,200 m³/day, with a current discharge volume of 314.43 m³/day, indicating ample capacity for future growth. As a Swedish facility, it adheres to stringent national environmental standards and the EU directive, which mandates appropriate treatment to protect receiving waters. The treated effluent is discharged into local watercourses that eventually drain into the North Sea via the Göta älv river system or nearby lakes. The advanced treatment ensures high removal of nutrients and organic matter, safeguarding the ecological health of downstream waters. This is particularly important in the Västra Götaland region, which features sensitive aquatic environments and supports diverse wildlife.

The plant discharges into local streams that are part of the Göta älv drainage basin, which flows into the Kattegat and ultimately the North Sea. The region's aquatic ecosystems are sensitive to nutrient pollution, and the advanced treatment helps protect downstream habitats, including important fish spawning grounds and migratory bird corridors. The inland location reduces direct marine impact, but the plant's effluent quality is critical for maintaining the ecological balance of the freshwater network.