Bengtsfors avloppsreningsverk - Municipal Wastewater Treatment Plant in Bengtsfors, Sweden

Bengtsfors avloppsreningsverk is a municipal wastewater treatment plant located in Bengtsfors, a town in Västra Götaland County, Sweden. The plant serves a population of approximately 7,284, classifying it as a small to medium agglomeration under EU classifications. Its address on Kanalvägen places it near the Dalsland Canal, a historic waterway in the region. As a Swedish plant, Bengtsfors avloppsreningsverk operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into Swedish law. For agglomerations of this size, the directive requires at least secondary treatment (biological treatment) to reduce organic matter and suspended solids. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar units), indicating its scale. The treated effluent is discharged into the local watershed, which ultimately drains into Lake Vänern, Sweden's largest lake, via the Upperud River or nearby streams. Lake Vänern is a critical freshwater resource and supports diverse aquatic life, including fish species such as salmon and trout. The plant plays a key role in protecting this downstream ecosystem from nutrient pollution and pathogens.

The plant discharges into the local watershed that flows into Lake Vänern via the Upperud River system. Lake Vänern is Sweden's largest lake and a vital freshwater resource, supporting diverse aquatic life and serving as a drinking water source for many communities. The region's forests and wetlands contribute to the ecological sensitivity of the area, making effective wastewater treatment essential to prevent eutrophication and maintain water quality.