Overview
Miejska Oczyszczalnia Sciekow in Zawidów, Poland, is a secondary treatment plant serving about 2,410 people. It discharges 343.63 thousand m³/year of treated wastewater into the local watershed.
Miejska Oczyszczalnia Sciekow is a municipal wastewater treatment plant located in Zawidów, in the Lower Silesian Voivodeship of southwestern Poland. The plant serves a population of approximately 2,410, classifying it as a small agglomeration under Polish and EU regulations. The facility provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The plant has a designed capacity of 7,400 m³/day, with an actual discharge volume of 343.63 thousand m³ per year, indicating significant spare capacity. Treated effluent from the plant is discharged into a local watercourse that ultimately drains into the Lusatian Neisse River, a tributary of the Oder River. The Oder flows northward to the Baltic Sea, making this plant part of the broader Oder basin ecosystem. The region's water bodies support diverse aquatic life and are important for regional biodiversity.
Environmental context
The plant discharges into a small watercourse that flows into the Lusatian Neisse River, which forms the border between Poland and Germany. The Neisse joins the Oder River near Gubin, and the Oder empties into the Baltic Sea via the Szczecin Lagoon. This watershed supports diverse freshwater and brackish habitats, including important fish spawning grounds and migratory bird routes. The Baltic Sea is a sensitive semi-enclosed sea with eutrophication challenges, making nutrient removal from wastewater critical for downstream water quality.
Frequently asked questions
The plant is located in Zawidów, in the Lower Silesian Voivodeship of southwestern Poland, near the border with the Czech Republic and Germany.
The plant serves approximately 2,410 people, classifying it as a small agglomeration under EU wastewater treatment directives.
The plant provides secondary treatment and discharges treated effluent into a local watercourse that flows into the Lusatian Neisse River, part of the Oder River basin draining to the Baltic Sea.
As a Polish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. National regulations transpose the directive into Polish law.
For small agglomerations (under 10,000 population equivalent), the EU directive mandates secondary treatment. Polish plants often use biological treatment processes such as activated sludge or trickling filters to meet effluent quality standards.
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