Overview
TP 495 of Mikkelin kt serves 56,000 people in Mikkeli, Finland, discharging treated wastewater into the local watershed within the Vuoksi drainage basin.
TP 495 of Mikkelin kt is a municipal wastewater treatment plant located in Mikkeli, Etelä-Savo, Finland. It serves a population of approximately 56,000, placing it in the medium-to-large agglomeration category under Finnish and EU regulations. The plant is situated in the lake-rich region of the Finnish Lakeland, where water quality protection is a high priority. As a plant serving over 50,000 people, TP 495 operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment as a minimum and tertiary treatment in sensitive areas. The designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a facility sized for its service population. Finnish plants typically employ biological treatment with nutrient removal to meet stringent discharge standards. The treated effluent from TP 495 is discharged into the local water system, which ultimately drains into the Vuoksi River basin and flows to Lake Saimaa, one of Finland's largest and most ecologically significant lakes. This watershed supports diverse aquatic life and is important for recreation and fisheries. The plant's performance is critical to maintaining the ecological health of these downstream waters.
Environmental context
The plant discharges into the Vuoksi drainage basin, which flows through the Finnish Lakeland to Lake Saimaa. Lake Saimaa is a large, ecologically sensitive lake system that supports diverse aquatic species, including the endangered Saimaa ringed seal. Downstream, the Vuoksi River connects to the Gulf of Finland via the Neva River, making nutrient and pollutant control essential for both local and Baltic Sea water quality.
Frequently asked questions
TP 495 of Mikkelin kt is located in Mikkeli, Etelä-Savo, Finland, at Graanintie in the Tuppurala district.
The plant serves approximately 56,000 people, classifying it as a medium-to-large agglomeration under EU regulations.
Treated wastewater is discharged into the local water system, which flows into the Vuoksi River basin and ultimately reaches Lake Saimaa.
As a Finnish plant serving over 50,000 people, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment and, in sensitive areas, tertiary treatment.
Plants of this scale in Finland typically use biological treatment with nutrient removal (nitrogen and phosphorus) to meet strict discharge limits, often including tertiary filtration.
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