Visagino m aglomeracija Wastewater Treatment Plant, Skryteliai, Lithuania

Visagino m aglomeracija is an advanced wastewater treatment plant located in Skryteliai, within the Visaginas municipality of Utenos apskritis, Lithuania. The plant serves a population of approximately 14,000 people and has a designed capacity of 30,000 m³/day, with a current discharge volume of 569.97 m³/day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). Lithuania, as an EU member state, requires advanced treatment for agglomerations serving over 10,000 people in sensitive catchments, aligning with the plant's population tier. The plant's treated effluent is discharged into local water bodies that ultimately drain into the Daugava River basin and the Baltic Sea. The Baltic Sea is a semi-enclosed sea with eutrophication challenges, making advanced nutrient removal critical for protecting its ecological health and reducing algal blooms.

The plant discharges into local streams that flow into the Daugava River basin, which drains into the Baltic Sea. The Baltic Sea is a brackish water body highly sensitive to nutrient pollution, where excess nitrogen and phosphorus from wastewater contribute to eutrophication and harmful algal blooms. Advanced treatment at this plant helps mitigate these impacts, supporting the health of downstream aquatic ecosystems.