Ullangers reningsverk - Advanced Wastewater Treatment in Ullångers distrikt, Sweden

Ullangers reningsverk is an advanced wastewater treatment facility located in Ullångers distrikt, within Kramfors kommun, Västernorrlands län, Sweden. The plant serves a population of approximately 4,274 and has a designed capacity of 3,000 cubic meters per day, with an average discharge volume of about 671 cubic meters per day. It operates under Sweden's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas and agglomerations of this scale. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. As a coastal facility within 10 km of the Baltic Sea, it plays a crucial role in protecting marine water quality. The treated effluent ultimately reaches the Gulf of Bothnia, a sensitive brackish sea environment that supports diverse aquatic life and is important for regional fisheries. The receiving water body is part of the Bothnian Sea catchment, which drains into the Baltic Sea. The plant's advanced treatment helps reduce nutrient loads, particularly nitrogen and phosphorus, mitigating eutrophication risks in the coastal zone. Its operation is integral to maintaining the ecological health of the surrounding coastal waters and the broader Baltic Sea ecosystem.

Ullangers reningsverk discharges treated wastewater into the coastal waters of the Bothnian Sea, part of the Baltic Sea basin. The Baltic Sea is a semi-enclosed brackish sea with limited water exchange, making it highly sensitive to nutrient pollution. The plant's advanced treatment reduces nutrient inputs, helping to prevent algal blooms and oxygen depletion in the coastal zone. The surrounding area includes ecologically important habitats that support fish spawning and migratory bird populations.