Overview
Molntorp Avloppsreningsverk serves approximately 11,903 people in Västerkvarn, Sweden. The plant is located near the coast and operates under Sweden's implementation of the EU Urban Waste Water Treatment Directive.
Molntorp Avloppsreningsverk is a wastewater treatment plant serving the community of Västerkvarn in Hallstahammars kommun, Västmanlands län, Sweden. The plant serves a population equivalent of approximately 11,903, placing it in the medium agglomeration category under EU classification. 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's national regulations transpose the directive, and plants serving between 10,000 and 150,000 population equivalent are expected to meet secondary treatment standards, with tertiary treatment required in sensitive areas. The plant's treated effluent discharges into the local watershed, which ultimately drains into the Baltic Sea via the Mälaren basin. The Baltic Sea is a brackish water body with limited water exchange, making it sensitive to nutrient pollution. Proper treatment at plants like Molntorp Avloppsreningsverk is essential for protecting this ecologically significant marine environment.
Environmental context
The plant's discharge enters the local water system, which flows through the Mälaren basin and eventually reaches the Baltic Sea. The Baltic Sea is a semi-enclosed brackish sea with high ecological sensitivity, particularly to nutrient loading that can cause eutrophication. Effective wastewater treatment at this facility helps reduce the input of nitrogen and phosphorus, supporting the health of downstream aquatic ecosystems.
Frequently asked questions
Molntorp Avloppsreningsverk is located on Slussvägen in Västerkvarn, within Hallstahammars kommun, Västmanlands län, Sweden.
The plant serves approximately 11,903 people, classifying it as a medium-sized agglomeration under EU wastewater treatment standards.
The treated effluent from the plant is discharged into the local watershed, which flows into the Mälaren basin and ultimately reaches the Baltic Sea.
As a Swedish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. Swedish national regulations enforce these standards.
For agglomerations between 10,000 and 150,000 population equivalent, the EU UWWTD requires secondary treatment. In Sweden, many such plants also incorporate nutrient removal to protect sensitive receiving waters like the Baltic Sea.
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