TP 710 of Ristiinan kk - Advanced Wastewater Treatment Plant in Mikkeli, Finland

TP 710 of Ristiinan kk is an advanced wastewater treatment plant located in the Ristiina district of Mikkeli, in the Etelä-Savo region of Finland. The plant serves a population of approximately 4,400 people, reflecting its role as a medium-sized municipal facility in the Finnish wastewater network. As an advanced treatment plant, TP 710 employs processes that go beyond secondary treatment to remove nutrients and other pollutants. This aligns with Finland's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas. The plant's advanced status ensures high effluent quality, protecting the local environment. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Baltic Sea. Its proximity to the coast (within 10 km) means that nutrient removal is critical to prevent eutrophication in the Baltic Sea, a sensitive marine ecosystem. The plant contributes to the health of downstream water bodies and supports Finland's commitment to reducing nutrient loads in the Baltic region.

The plant discharges into the local watershed in Etelä-Savo, which flows through the Saimaa lake system and eventually into the Gulf of Finland, part of the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea highly sensitive to nutrient pollution, making advanced treatment essential for preventing algal blooms and maintaining ecological balance. The region's forests and lakes provide important habitats for diverse aquatic life.