UWWTP Kubrat - Secondary Wastewater Treatment Plant in Kubrat, Razgrad, Bulgaria

UWWTP Kubrat is a municipal wastewater treatment facility located in the Dryanovo district of Kubrat, Razgrad Province, Bulgaria. The plant serves a population of approximately 3,190 and has a designed capacity of 11,000 m³ per day, indicating it is sized to accommodate future growth or seasonal variations. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids, meeting the standards required under Bulgarian and EU regulations. The plant operates under the framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which Bulgaria has transposed into national law. For agglomerations with a population equivalent (PE) between 2,000 and 10,000, secondary treatment is the standard requirement. The plant's current population served of 3,190 falls within this category, and its treatment level aligns with the directive's expectations for inland freshwater discharge. The treated effluent from UWWTP Kubrat is discharged into a local watercourse that eventually drains into the Danube River basin. The Danube flows eastward into the Black Sea, making the plant part of a transboundary watershed that supports diverse aquatic ecosystems. Proper treatment at this facility helps protect downstream water quality in the Danube and the Black Sea coastal environment.

UWWTP Kubrat discharges into a tributary of the Rusenski Lom River, which flows into the Danube River near Ruse. The Danube is a major European waterway that ultimately reaches the Black Sea. The watershed supports diverse aquatic life, including fish species such as sturgeon and carp, and provides important migratory corridors. Effective wastewater treatment at this plant helps reduce nutrient and pollutant loads, contributing to the ecological health of the Danube and Black Sea ecosystems.