Overview
DOLNA wastewater treatment plant serves Jastrzębie-Zdrój, Poland, with a population equivalent of 9,284. The facility operates under Polish regulations implementing the EU Urban Waste Water Treatment Directive.
DOLNA is a wastewater treatment plant located in the Moszczenica district of Jastrzębie-Zdrój, in the Silesian Voivodeship of southern Poland. The plant serves a population equivalent of 9,284, classifying it as a medium agglomeration under Polish and EU regulations. Its address on Dębowa Street places it within the urban fabric of this coal-mining region. As a Polish facility, DOLNA operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations between 2,000 and 10,000 population equivalent, the directive requires secondary treatment, with more stringent requirements if the receiving waters are designated as sensitive areas. Regulatory compliance ensures appropriate treatment for its scale. The plant discharges treated wastewater into local watercourses that ultimately drain into the Odra River basin, which flows northward to the Baltic Sea. The Silesian region is characterized by dense population and industrial activity, making effective wastewater treatment critical for protecting downstream aquatic ecosystems and the Baltic Sea environment.
Environmental context
DOLNA discharges into tributaries of the Odra River, which flows through Poland and Germany before reaching the Baltic Sea. The Odra basin supports diverse aquatic life and is an important migratory corridor for fish. The Baltic Sea is a semi-enclosed brackish sea sensitive to nutrient pollution, so effective treatment at inland plants like DOLNA helps reduce eutrophication risks downstream.
Frequently asked questions
DOLNA is located at Dębowa Street in the Moszczenica district of Jastrzębie-Zdrój, in the Silesian Voivodeship of southern Poland.
DOLNA serves a population equivalent of 9,284, classifying it as a medium-sized agglomeration under Polish and EU regulations.
DOLNA discharges treated wastewater into local watercourses that are part of the Odra River basin, which ultimately flows to the Baltic Sea.
As a Polish plant serving 9,284 PE, DOLNA falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size, with additional nutrient removal if discharging into sensitive areas.
In Poland, wastewater treatment plants serving around 9,000 people typically provide at least secondary biological treatment, as required by the EU UWWTD. Many also include phosphorus and nitrogen removal to protect sensitive water bodies.
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