Overview
COQUELLES wastewater treatment plant in Coquelles, Hauts-de-France, France, serves a population of 5,333 with advanced treatment. It discharges 951.40 m³/day and has a designed capacity of 8,683.00 m³/day.
The COQUELLES wastewater treatment plant is located in Coquelles, within the Pas-de-Calais department of Hauts-de-France, France. It serves a population of approximately 5,333 people, classifying it as a small to medium agglomeration under French and EU regulations. The plant is situated near the coast, less than 10 km from the English Channel. The facility 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 8,683.00 m³/day and an actual discharge volume of 951.40 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variability. The plant's advanced treatment likely includes nutrient removal to protect sensitive coastal waters. Treated effluent is discharged into local watercourses that drain into the English Channel, a vital marine ecosystem supporting diverse aquatic life and important for migratory species. The plant plays a key role in protecting the coastal environment of the Opal Coast region, known for its ecological sensitivity and tourism value.
Environmental context
The plant discharges into the Marais de Coquelles, a wetland area that drains into the English Channel via the Calais region. The English Channel is a major marine corridor supporting diverse fish, bird, and marine mammal populations. The advanced treatment helps minimize nutrient loading and protects the sensitive coastal ecosystem, which includes important habitats for migratory birds and marine life.
Frequently asked questions
The COQUELLES plant is located at D 304, Le Marais de Coquelles, in the commune of Coquelles, Pas-de-Calais, Hauts-de-France, France.
The plant serves a population of 5,333 people, classifying it as a small to medium agglomeration under EU regulations.
The plant discharges treated effluent into the Marais de Coquelles wetland, which drains into the English Channel near Calais.
The plant provides advanced treatment, which includes nutrient removal beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive for this population size.
As a French plant serving over 2,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum. The plant's advanced treatment exceeds these requirements, likely due to its coastal location and the need to protect sensitive marine environments.
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