Overview
TP 761 of Seinajoen kt is a municipal wastewater treatment plant in Seinäjoki, Etelä-Pohjanmaa, Finland, serving approximately 110,000 people. It operates under Finland's implementation of the EU Urban Waste Water Treatment Directive.
TP 761 of Seinajoen kt is a municipal wastewater treatment plant located in Seinäjoki, Etelä-Pohjanmaa, Finland. The plant serves a population of approximately 110,000, classifying it as a large agglomeration under EU regulations. It is situated inland, away from coastal areas, and its operations are integral to the region's water management infrastructure. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving over 100,000 population equivalents in sensitive areas are required to provide tertiary treatment. Finland designates many inland waters as sensitive, so this plant likely employs advanced treatment to meet stringent nutrient removal standards, particularly for phosphorus and nitrogen, to protect downstream water bodies. The treated effluent from the plant is discharged into local watercourses that ultimately drain into the Gulf of Bothnia via the Kyrönjoki river system. This river basin supports diverse aquatic life and is important for both ecological balance and recreational use. The plant's performance is critical to maintaining water quality in the region's lakes and rivers, which are sensitive to eutrophication.
Environmental context
The plant discharges into the Kyrönjoki river system, which flows into the Gulf of Bothnia, part of the Baltic Sea. The Baltic Sea is highly sensitive to nutrient pollution, and the plant's advanced treatment helps reduce the risk of eutrophication. The surrounding watershed includes numerous lakes and wetlands that support diverse aquatic species and migratory birds.
Frequently asked questions
The plant is located in Seinäjoki, Etelä-Pohjanmaa, Finland, at Puhdistamonkatu 12, 60320 Seinäjoki.
The plant serves approximately 110,000 people, classifying it as a large agglomeration under EU regulations.
The treated effluent is discharged into local watercourses that flow into the Kyrönjoki river system, ultimately reaching the Gulf of Bothnia.
As a plant serving over 100,000 population equivalents, it falls under the EU UWWTD requirements for advanced treatment, especially in sensitive areas like Finland's inland waters, to reduce nutrient pollution.
Plants of this scale in Finland typically employ tertiary treatment with biological nutrient removal to meet strict phosphorus and nitrogen limits, protecting sensitive water bodies from eutrophication.
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