Overview
SALA AVLOPPSRENINGSVERK is a municipal wastewater treatment plant serving Sala, Sweden. It operates under Swedish environmental regulations and EU directives, treating wastewater for approximately 19,761 people.
SALA AVLOPPSRENINGSVERK is the municipal wastewater treatment plant for the town of Sala, located in Västmanlands län, Sweden. The plant serves a population of approximately 19,761, placing it in the medium agglomeration category under EU classification. As a Swedish facility, it operates within the framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment based on population size and receiving water sensitivity. Plants of this scale in Sweden typically employ mechanical, biological, and often chemical treatment stages to meet national and EU requirements. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating a facility sized for its service population. Swedish wastewater treatment is generally advanced, with many plants achieving high removal rates for organic matter, nutrients, and pathogens. The treated effluent from SALA AVLOPPSRENINGSVERK is discharged into the local watershed, which ultimately drains into the Baltic Sea via the Dalälven river system. The Baltic Sea is a sensitive brackish water body with eutrophication challenges, making nutrient removal important for plants in this region. The plant's location inland, over 50 km from the coast, reduces direct marine impact but still contributes to the overall nutrient load to the Baltic catchment.
Environmental context
The plant discharges into the local water system that flows into the Dalälven river, one of Sweden's major rivers, which empties into the Gulf of Bothnia, a northern arm of the Baltic Sea. The Baltic Sea is a semi-enclosed, brackish sea with limited water exchange, making it highly sensitive to nutrient pollution. Eutrophication from nitrogen and phosphorus inputs is a key environmental concern, driving stringent treatment requirements for inland plants in the catchment. The surrounding region features mixed forest and agricultural land, with Sala known for its historic silver mine, which may influence local water quality considerations.
Frequently asked questions
SALA AVLOPPSRENINGSVERK is located in Sala, Västmanlands län, Sweden, at Långgatan in the Norrberg area. The plant serves the municipality of Sala.
The plant serves approximately 19,761 people, classifying it as a medium-sized agglomeration under EU wastewater treatment directives.
The treated effluent is discharged into the local watershed, which flows into the Dalälven river system and ultimately reaches the Baltic Sea. The plant's inland location means it contributes to the nutrient load of the Baltic catchment.
As a Swedish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 2,000 people and more advanced treatment in sensitive areas. Swedish national regulations implement these standards.
Plants of this scale in Sweden typically employ mechanical, biological, and often chemical treatment to remove organic matter, nitrogen, and phosphorus. Many also include sludge treatment and biogas recovery to meet stringent environmental standards.
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