UWWTP Madan - Advanced Wastewater Treatment Plant in Madan, Bulgaria

UWWTP Madan is a wastewater treatment facility located in the town of Madan, within Smolyan Province, Bulgaria. The plant serves a population of approximately 5,667 residents and is designed with a capacity of 10,000 m³/day, indicating it is sized to accommodate future growth or seasonal variations. The plant employs advanced treatment processes, which go beyond the secondary treatment requirements typically mandated by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. This level of treatment is often required for sensitive areas or to meet stringent effluent quality standards, ensuring high removal of nutrients and organic pollutants. Treated wastewater from the plant is discharged into local watercourses that eventually drain into the Arda River, a tributary of the Maritsa River, which flows into the Aegean Sea. The advanced treatment helps protect the aquatic ecosystems of these rivers and the downstream marine environment from nutrient pollution and other contaminants.

The plant discharges into local streams that feed the Arda River, part of the Maritsa River basin, which ultimately reaches the Aegean Sea. The region's mountainous terrain and relatively small watercourses make them sensitive to pollution, and the advanced treatment helps maintain water quality for aquatic life and downstream uses.