TP 366 of Kalvian kirkons - Advanced Wastewater Treatment Plant in Kälviä, Kokkola, Finland

TP 366 of Kalvian kirkons is an advanced wastewater treatment facility located in Kälviä, within the city of Kokkola in the Keski-Pohjanmaa region of Finland. The plant serves a population of approximately 3,300 people, reflecting its role in managing municipal wastewater for a small community in this coastal area of western Finland. As an advanced treatment plant, it provides a higher level of purification beyond secondary treatment, which is typical for facilities in sensitive areas under Finnish and EU regulations. The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size to protect the receiving environment. The discharge volume of 540.86 cubic meters indicates the scale of daily effluent management. The treated wastewater is discharged into the local watershed, which ultimately drains into the Gulf of Bothnia, part of the Baltic Sea. This coastal location necessitates advanced treatment to minimize nutrient loading and protect the sensitive marine ecosystem. The plant's operations contribute to safeguarding water quality in the region, supporting both ecological health and recreational uses of the coastal waters.

The plant discharges into the Gulf of Bothnia via local watercourses in the Kokkola area. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. Advanced treatment at this plant helps reduce the risk of eutrophication, which is a major ecological concern in the region. The coastal waters support diverse aquatic life and are important for local fisheries and tourism.