Pruszcz Wastewater Treatment Plant, Pruszcz, Poland | Secondary Treatment

The Pruszcz wastewater treatment plant is located in the town of Pruszcz, in the kujawsko-pomorskie province of Poland. It serves a population of approximately 6,605, classifying it as a small to medium agglomeration under Polish regulations. The plant is situated inland, away from coastal areas, and its operations are part of the local municipal infrastructure. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size in normal areas. The designed capacity is 9,020 m³/day, while the current discharge volume is 941.77 m³/day, indicating that the plant operates well below its capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body, which ultimately drains into the Vistula River basin and then into the Baltic Sea. The plant plays a key role in protecting the local watershed from pollution, supporting aquatic life and downstream ecosystems. Its operation is subject to Polish environmental permits that align with EU standards.

The plant discharges into a local watercourse that is part of the Vistula River basin, one of the largest river systems in Poland. The Vistula flows northward into the Baltic Sea, a semi-enclosed sea with sensitive marine ecosystems. The plant's secondary treatment helps reduce nutrient loads, which is important for mitigating eutrophication in the Baltic. The surrounding area is predominantly agricultural, so the plant also helps control runoff-related pollutants.