COV Vulkan Bosany Wastewater Treatment Plant, Veľké Bošany, Slovakia

COV Vulkan Bosany is a municipal wastewater treatment plant located in Veľké Bošany, Trenčiansky kraj, Slovakia. The plant serves a population of 1,172 and has a designed capacity of 32,000 m³/day, indicating it is sized for future growth or industrial loads. It provides secondary treatment, which is the standard biological treatment level required under EU regulations for smaller agglomerations. The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all agglomerations above 2,000 population equivalent. Although the plant serves fewer than 2,000 people, it meets the directive's requirements for sensitive areas where more stringent treatment may be needed. The discharge volume of 239.85 m³/day suggests current flows are well below capacity. The treated effluent is discharged into local waterways that drain into the Nitra River basin, part of the Danube River system. This ultimately flows into the Black Sea. The plant plays a key role in protecting the Nitra River and downstream ecosystems from untreated wastewater, supporting water quality in the region.

The plant discharges into the Nitra River basin, a tributary of the Danube River, which flows into the Black Sea. The Nitra River supports diverse aquatic life and is used for irrigation and recreation. Downstream, the Danube Delta is an ecologically sensitive area that hosts numerous bird species and fish. Proper treatment at COV Vulkan Bosany helps reduce nutrient loading and pollution in this transboundary river system.