Oczyszczalnia Ścieków w Komarowie - Secondary Treatment Plant in Modrzewie, Poland

Oczyszczalnia Ścieków w Komarowie is a municipal wastewater treatment plant located in Modrzewie, within the Goleniów municipality of Zachodniopomorskie Voivodeship, Poland. The plant serves a population of approximately 4,654 people, reflecting its role in managing domestic wastewater for a small agglomeration in the region. The facility provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,150 m³ per day and an actual discharge volume of 663.59 m³ per day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Baltic Sea. Being within 10 km of the coast, the plant's discharge has potential implications for coastal water quality and the sensitive marine ecosystem of the Baltic Sea, a brackish inland sea with limited water exchange and vulnerability to nutrient pollution.

The plant's discharge enters the local drainage network, which flows through the Odra River basin and eventually reaches the Baltic Sea. The Baltic Sea is a semi-enclosed brackish sea with high ecological sensitivity, particularly to nutrient inputs that can cause eutrophication and algal blooms. The plant's secondary treatment helps reduce organic pollutants, but nutrient removal may be limited, making its coastal location a key factor for local water quality management.