BYLANDETS ARV Wastewater Treatment Plant, Smedjebacken, Sweden

BYLANDETS ARV is an advanced wastewater treatment plant located in Smedjebacken, Dalarna County, Sweden. The facility serves a population of approximately 5,666 people and has a designed capacity of 16,400 cubic meters per day, with an average discharge volume of 889.46 cubic meters per day. As an advanced treatment plant, it provides a high level of pollutant removal, including nutrient reduction, which is critical for protecting sensitive inland waters. The plant operates under Sweden's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (5,666 population equivalent), the directive requires at least secondary treatment, but Sweden often mandates advanced treatment, especially in areas with sensitive receiving waters. The plant's advanced treatment status indicates it likely employs biological nutrient removal or similar processes to reduce nitrogen and phosphorus loads. The treated effluent from BYLANDETS ARV is discharged into the local watershed, which ultimately drains into the Baltic Sea via the Dalälven river system. The Baltic Sea is a highly sensitive brackish water body suffering from eutrophication, making nutrient removal at inland plants crucial. The plant's advanced treatment helps reduce the nutrient load reaching the sea, supporting regional environmental goals.

BYLANDETS ARV discharges into the Dalälven river basin, which flows into the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea highly susceptible to eutrophication from nutrient inputs. Advanced treatment at this plant reduces nitrogen and phosphorus loads, helping to mitigate algal blooms and oxygen depletion in coastal waters. The local watershed includes lakes and rivers that support diverse aquatic life and are important for recreation and fishing.