Oud Heverlee Wastewater Treatment Plant - Advanced Treatment in Vlaams-Brabant, Belgium

The Oud Heverlee wastewater treatment plant is located in the municipality of Oud-Heverlee, within the province of Vlaams-Brabant, Belgium. It serves a population of approximately 2,400 residents, classifying it as a small agglomeration under European Union classification. The plant operates under the regulatory framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment of urban wastewater. The facility employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With a designed capacity of 1,620 m³/day and an average daily flow of 429 m³/day, the plant operates well below its maximum capacity, indicating room for future growth. The advanced treatment level typically includes nutrient removal, which is important for protecting sensitive water bodies. The treated effluent is discharged into local watercourses that eventually drain into the Dijle River, a tributary of the Rupel, which flows into the Scheldt estuary and ultimately the North Sea. The plant plays a key role in maintaining water quality in the region, supporting aquatic life and recreational uses downstream.

The plant discharges into the Dijle River basin, which flows through the Flemish region before joining the Rupel and Scheldt rivers. The Scheldt estuary is an ecologically important area that supports diverse aquatic life and migratory bird species. Advanced treatment at this plant helps reduce nutrient loading, protecting downstream ecosystems from eutrophication and maintaining biodiversity in the river network.