VITRY EN ARTOIS Wastewater Treatment Plant, Vitry-en-Artois, Hauts-de-France

The VITRY EN ARTOIS wastewater treatment plant is located in Vitry-en-Artois, a commune in the Pas-de-Calais department of Hauts-de-France, northern France. The plant serves a population of approximately 4,300 people, classifying it as a small agglomeration under EU classification. It is situated along the Chemin du Halage, near the Canal de la Deûle, which influences its discharge context. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 7,750 m³/day and an actual discharge volume of 767.11 m³/day, the facility operates well below its capacity, indicating potential for future growth or seasonal variations. The advanced treatment likely includes nutrient removal, which is important for protecting sensitive water bodies. The treated effluent is discharged into the local water system, ultimately draining into the Deûle River, a tributary of the Lys River, which flows into the Scheldt estuary and the North Sea. This watershed supports diverse aquatic life and is part of a densely populated and industrialized region. The plant's advanced treatment helps reduce nutrient loads and protect downstream ecosystems, including the Scheldt estuary, which is ecologically sensitive.

The plant discharges into the Canal de la Deûle, which connects to the Deûle River, a tributary of the Lys River. The Lys flows into the Scheldt River, which empties into the North Sea via the Scheldt estuary. This watershed supports diverse aquatic habitats and is important for migratory fish. The region is characterized by flat terrain and intensive agriculture, making nutrient removal from wastewater critical to prevent eutrophication in downstream waters.