Overview
UWWTP G Oryahovitsa D Oryahovitsa Lyaskovec serves the town of Lyaskovets, Bulgaria, treating wastewater for over 41,500 people. The plant operates under Bulgaria's implementation of the EU Urban Waste Water Treatment Directive.
UWWTP G Oryahovitsa D Oryahovitsa Lyaskovec is a municipal wastewater treatment plant located near Lyaskovets in the Veliko Tarnovo Province of Bulgaria. The facility serves a population of approximately 41,563 people, classifying it as a medium-sized agglomeration under EU standards. As a Bulgarian plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. Bulgaria has transposed these requirements into national legislation, and the plant is subject to permits issued by the relevant environmental authorities. The treated effluent is discharged into the local watershed, which ultimately drains into the Yantra River, a tributary of the Danube River. The Danube flows into the Black Sea, making the plant's performance important for downstream water quality in both the river and the sea. The region supports diverse aquatic life and is part of an important ecological corridor.
Environmental context
The plant discharges into the Yantra River basin, which flows northward to join the Danube River near Svishtov. The Danube then empties into the Black Sea via the Danube Delta. This watershed supports a variety of fish species and migratory birds, and the Black Sea is a semi-enclosed sea with limited water exchange, making it sensitive to nutrient pollution. Effective treatment at this plant helps protect downstream ecosystems from eutrophication.
Frequently asked questions
The plant is located near Lyaskovets in the Veliko Tarnovo Province of Bulgaria, with coordinates approximately 43.144 N, 25.733 E.
The plant serves a population of 41,563 people, classifying it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the local watershed, which drains into the Yantra River, a tributary of the Danube River, ultimately reaching the Black Sea.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. Bulgaria has implemented this directive into national law.
Under the EU UWWTD, plants serving between 10,000 and 150,000 population equivalents are required to have at least secondary treatment. If the receiving waters are sensitive to eutrophication, more advanced treatment may be required.
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