TP 598 of Pernion kk - Advanced Wastewater Treatment Plant in Salo, Finland

TP 598 of Pernion kk is a wastewater treatment facility located in the Perniö district of Salo, in the Varsinais-Suomi region of Finland. The plant serves a population of approximately 1,600 residents, making it a small-scale municipal facility. It operates under Finland's national environmental regulations, which align with the EU Urban Waste Water Treatment Directive (91/271/EEC), requiring advanced treatment for sensitive areas. The plant employs advanced treatment processes, ensuring a high level of pollutant removal. It discharges 262.23 cubic meters of treated wastewater per day. The plant's advanced treatment level indicates compliance with stringent Finnish standards for nutrient removal, particularly phosphorus and nitrogen, which are critical in the Baltic Sea catchment. The treated effluent enters local waterways that drain into the Baltic Sea, a semi-enclosed sea sensitive to eutrophication. The plant's advanced treatment helps reduce nutrient loading, protecting downstream aquatic ecosystems. Its location within 50 km of the coast underscores its role in safeguarding coastal and marine water quality in the Archipelago Sea region.

The plant discharges into local streams that flow into the Baltic Sea via the Archipelago Sea. This region is ecologically sensitive due to high nutrient loads causing eutrophication, with algal blooms threatening biodiversity. Advanced treatment at this plant reduces phosphorus and nitrogen inputs, supporting the health of downstream coastal waters and marine habitats.