Annelunds avloppsreningsverk - Advanced Wastewater Treatment in Annelund, Sweden

Annelunds avloppsreningsverk is an advanced wastewater treatment plant located in Annelund, Herrljunga kommun, Västra Götalands län, Sweden. The facility serves a population of approximately 3,987 people, classifying it as a small agglomeration under Swedish and EU regulations. 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. With a designed capacity of 5,000 m³/day and an actual discharge volume of 625.88 m³/day, the plant operates well within its capacity, indicating efficient performance. The treated effluent is discharged into local waterways that ultimately drain into the Kattegat sea via the Göta älv river system. The plant's advanced treatment helps protect the sensitive aquatic ecosystems of the region, including the downstream marine environment, by reducing nutrient loads and pollutants.

The plant discharges into local streams that flow into the Göta älv river system, which empties into the Kattegat, a sea area between Sweden and Denmark. The Kattegat supports diverse marine life, including fish and seabird populations, and is an important migratory corridor. Advanced treatment at Annelund helps minimize nutrient enrichment and protect this ecologically sensitive coastal environment.