Overview
ALMSTA AVLOPPSANLAGGNING is an advanced wastewater treatment plant in Älmsta, Sweden, serving 2,111 people. It discharges 331.39 m³/day of treated effluent and is located within 10 km of the Baltic Sea coast.
ALMSTA AVLOPPSANLAGGNING is a municipal wastewater treatment facility located in Älmsta, Norrtälje kommun, Stockholm County, Sweden. The plant serves a population of 2,111 and has a designed capacity of 2,100 m³/day, with a current discharge volume of 331.39 m³/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. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. As a small agglomeration (under 10,000 population equivalent), it meets the directive's requirements for secondary treatment, with advanced treatment providing additional nutrient removal to protect the sensitive Baltic Sea environment. The treated effluent is discharged into the Baltic Sea via local watercourses. The Baltic Sea is a brackish inland sea with limited water exchange, making it highly sensitive to nutrient pollution. The plant's advanced treatment helps reduce eutrophication risks in the coastal waters of the Stockholm archipelago, which supports diverse aquatic life and is an important recreational area.
Environmental context
The plant discharges into the Baltic Sea, a semi-enclosed brackish sea with limited water exchange, making it highly sensitive to nutrient inputs. The Stockholm archipelago, where the plant is located, features a complex network of islands and coastal waters that support diverse marine life, including fish, seabirds, and aquatic vegetation. Advanced treatment at this plant helps mitigate eutrophication, which is a key environmental concern in the Baltic Sea region.
Frequently asked questions
ALMSTA AVLOPPSANLAGGNING is located in Älmsta, Norrtälje kommun, Stockholm County, Sweden. The address is Simpnäsvägen, Norra Sund, Älmsta, 764 31.
The plant serves a population of 2,111 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant discharges treated effluent into the Baltic Sea via local watercourses. It is located within 10 km of the coast, and its advanced treatment ensures high-quality effluent to protect the sensitive marine environment.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment. This is typical for plants discharging into sensitive areas like the Baltic Sea under Swedish regulations.
As a Swedish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For its size (serving 2,111 people), secondary treatment is required, but advanced treatment is implemented to protect the Baltic Sea, a sensitive area under the directive.
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