Chojno Wastewater Treatment Plant - Secondary Treatment in Wielkopolskie, Poland

Chojno wastewater treatment plant is located in the village of Chojno, within gmina Pakosław, powiat rawicki, in województwo wielkopolskie, Poland. The plant serves a population of 1,173 and is part of the municipal wastewater infrastructure for the local community. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. It discharges an average of 167.25 m³/day of treated wastewater, with a designed capacity of 5,334 m³/day, indicating substantial reserve capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Warta River basin, a major tributary of the Oder River. The Oder flows into the Baltic Sea, making the plant's operations relevant to the ecological health of the Baltic Sea catchment area.

The plant's discharge enters local streams within the Warta River basin, which flows into the Oder River and eventually reaches the Baltic Sea. The Baltic Sea is a sensitive brackish ecosystem with eutrophication challenges, making nutrient removal from wastewater important. The plant's secondary treatment helps reduce organic load and protect downstream aquatic habitats.