TALLBYNS ARV - Advanced Wastewater Treatment Plant in Malung, Sweden

TALLBYNS ARV is a wastewater treatment plant located in Malung, Dalarnas län, Sweden. It serves a population of approximately 4,777 people, classifying it as a small to medium agglomeration under Swedish and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the municipal infrastructure managed by Malung-Sälens kommun. 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). This level of treatment is typically necessary for sensitive areas or to meet stringent effluent quality standards. The designed capacity of 9,000 m³/day indicates that the plant has room for future growth, with current discharge volumes averaging around 750 m³/day. The treated effluent is discharged into local water bodies that eventually drain into the Dalälven river system, which flows into the Baltic Sea. The advanced treatment helps protect the downstream aquatic environment, reducing nutrient loads and ensuring compliance with Swedish environmental quality standards. The plant plays a key role in safeguarding the region's water resources and supporting the ecological health of the Dalälven basin.

The plant discharges into the Dalälven river basin, which flows southeast through central Sweden and empties into the Baltic Sea near Gävle. This watershed supports diverse aquatic life, including salmon and trout populations, and is an important migratory corridor. Advanced treatment at TALLBYNS ARV helps minimize nutrient and pollutant loads, protecting the river's ecological integrity and the sensitive coastal environment of the Baltic Sea.