Overview
LIEGE SCLESSIN is a municipal wastewater treatment plant serving about 93,150 people in Liège, Belgium. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
LIEGE SCLESSIN is a wastewater treatment plant located in the Sclessin district of Liège, Belgium. Serving a population of approximately 93,150, it is classified as a large agglomeration under EU regulations. The plant is situated in the Walloon region, an area with a strong industrial heritage and a dense urban population. As a facility serving over 50,000 people, LIEGE SCLESSIN is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment as a minimum. For agglomerations of this size discharging into sensitive areas, tertiary treatment may also be mandated. The plant's treatment processes are designed to meet these regulatory standards, ensuring compliance with European water quality objectives. The treated effluent from LIEGE SCLESSIN is discharged into the Meuse River, a major European waterway that flows through Belgium and the Netherlands before entering the North Sea. The Meuse basin supports diverse aquatic life and is an important ecological corridor. The plant plays a key role in protecting the river's water quality and the downstream environment, including the Rhine-Meuse-Scheldt delta.
Environmental context
LIEGE SCLESSIN discharges into the Meuse River, which flows through Belgium and the Netherlands to the North Sea. The Meuse basin is ecologically significant, supporting fish species such as salmon and eel, and providing habitat for migratory birds. The plant's operations help maintain water quality in this transboundary river system, which is vital for both human use and aquatic ecosystems.
Frequently asked questions
LIEGE SCLESSIN is located in the Sclessin district of Liège, in the Walloon region of Belgium. Its address is Rue Chiff d'Or, Sclessin, Liège, 4000.
The plant serves approximately 93,150 people, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the Meuse River, which flows through Belgium and the Netherlands to the North Sea.
As a Belgian plant serving over 50,000 people, LIEGE SCLESSIN operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment and, in sensitive areas, tertiary treatment.
For agglomerations of this size in Belgium, secondary biological treatment is standard, with tertiary treatment often required for nutrient removal to protect sensitive water bodies like the Meuse.
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