TP 169 of Joutsenon kk Wastewater Treatment Plant, Lappeenranta, Finland

TP 169 of Joutsenon kk is a wastewater treatment plant located in the Joutseno district of Lappeenranta, in the Etelä-Karjala region of Finland. It serves a population of approximately 6,600, classifying it as a small to medium agglomeration under Finnish and EU standards. The plant is situated inland, near the Ahvenlampi area, and its operations are part of the municipal wastewater infrastructure for the surrounding community. As a plant in Finland, TP 169 of Joutsenon kk is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size unless discharging into sensitive areas that demand tertiary treatment. The plant's designed capacity is 1.00 (likely in thousand cubic meters per day or similar units), indicating it is sized appropriately for its service population. Finnish plants typically employ biological treatment with nutrient removal to meet stringent Baltic Sea protection standards. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Gulf of Finland via the Saimaa lake system and the Vuoksi River. This region is ecologically significant, supporting diverse aquatic life and serving as a migratory corridor for fish. The plant's performance is critical for maintaining water quality in the sensitive Baltic Sea catchment area.

TP 169 of Joutsenon kk discharges into the local watershed near Ahvenlampi, which flows into the Saimaa lake system, the largest lake in Finland. From there, water travels via the Vuoksi River to Lake Ladoga in Russia and eventually to the Gulf of Finland, part of the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. The plant's operations contribute to protecting this fragile ecosystem from eutrophication.