Overview
Vilniaus m aglomeracija serves approximately 680,000 people in the Vilnius region, Lithuania. The plant discharges treated wastewater into local waterways, supporting the Neris River basin and the Baltic Sea catchment.
Vilniaus m aglomeracija is a major wastewater treatment facility serving the Vilnius metropolitan area, located in Naujakiemis, Vilniaus apskritis, Lithuania. With a population equivalent of 680,000, it is one of the largest agglomerations in the country, classified as a large agglomeration under EU regulations. As a large agglomeration, the plant is expected to meet stringent treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires at least secondary treatment and, for sensitive areas, tertiary treatment to reduce nutrients. The plant's operational details are managed by municipal authorities to ensure compliance with national and EU water quality standards. The treated effluent is discharged into the Neris River, a major tributary of the Nemunas River, which flows into the Curonian Lagoon and ultimately the Baltic Sea. This downstream chain supports diverse aquatic ecosystems and is important for regional biodiversity, including migratory fish species. The plant plays a critical role in protecting water quality in this sensitive Baltic catchment.
Environmental context
The plant's discharge enters the Neris River, which flows into the Nemunas River and then the Curonian Lagoon, a shallow, brackish lagoon connected to the Baltic Sea. This watershed supports diverse aquatic life, including fish spawning grounds and migratory bird habitats. Nutrient loading from wastewater can contribute to eutrophication in the lagoon, making advanced treatment important for ecological health.
Frequently asked questions
The plant is located in Naujakiemis, Zujunu seniunija, Vilniaus rajono savivaldybe, Vilniaus apskritis, Lithuania, at Upes g. It serves the Vilnius metropolitan area.
Treated wastewater is discharged into the Neris River, which flows into the Nemunas River and eventually reaches the Curonian Lagoon and the Baltic Sea.
The plant protects the Neris River, a major tributary of the Nemunas River, and the downstream Curonian Lagoon and Baltic Sea from pollution.
As a large agglomeration serving over 150,000 people, the plant is subject to the EU UWWTD, which mandates secondary treatment and, in sensitive areas like the Baltic catchment, tertiary treatment to reduce nitrogen and phosphorus.
Plants of this scale in Lithuania typically employ advanced biological treatment with nutrient removal to meet EU standards, including activated sludge processes and phosphorus precipitation.
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