Trollhattan avloppsreningsverk - Wastewater Treatment Plant in Trollhättan, Sweden

Trollhattan avloppsreningsverk is a municipal wastewater treatment plant located in Trollhättan, Västra Götaland County, Sweden. Serving a population of around 55,604, it falls within the medium-agglomeration category under EU regulations. The plant is situated near the Göta älv river system, which flows into the Kattegat sea area. As a Swedish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Sweden has implemented stringent standards, often exceeding minimum EU requirements, particularly in sensitive areas like the Göta älv catchment. The plant's designed capacity is 1.00 (likely in cubic meters per second or similar unit), indicating a substantial infrastructure. The treated effluent is discharged into the Göta älv river, which flows through Trollhättan and eventually reaches the Kattegat, a part of the North Sea. This water body supports diverse aquatic life and is important for regional fisheries and recreation. The plant plays a key role in protecting downstream ecosystems from nutrient pollution and pathogens.

The plant discharges into the Göta älv river, which flows through Västra Götaland to the Kattegat, a marine area connected to the North Sea. This watershed supports salmon and sea trout populations and is ecologically sensitive to nutrient loading. The plant's treatment helps maintain water quality in this important migratory corridor and coastal environment.