Overview
DUISANS SE is an advanced wastewater treatment plant in Duisans, Hauts-de-France, France, serving a population of 2,100. It discharges treated effluent into the local water system, supporting the region's environmental quality.
DUISANS SE is a wastewater treatment facility located in the commune of Duisans, within the Arras arrondissement of Pas-de-Calais, Hauts-de-France, France. The plant serves a population of approximately 2,100 residents, providing advanced treatment to protect local water resources. It operates as part of France's municipal wastewater infrastructure, which is regulated under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Its designed capacity is 4,950 cubic meters per day, and it treats an average daily flow of 374.64 cubic meters, indicating ample reserve capacity. As an advanced treatment facility, it meets stringent effluent quality standards required for sensitive areas. The treated wastewater is discharged into the local watershed, which ultimately drains into the Scarpe River and then the Scheldt River basin, flowing toward the North Sea. The plant plays a key role in maintaining water quality in this densely populated and agriculturally active region, supporting aquatic life and downstream uses.
Environmental context
The plant discharges into the Scarpe River, a tributary of the Scheldt River, which flows through northern France and Belgium before reaching the North Sea. The Scheldt basin supports diverse aquatic ecosystems and is an important migratory corridor for fish. The advanced treatment at DUISANS SE helps reduce nutrient loading, protecting downstream water bodies from eutrophication and supporting biodiversity in this ecologically sensitive region.
Frequently asked questions
DUISANS SE is located at Rue du Docteur Antoine Laroche, Duisans, in the Pas-de-Calais department of Hauts-de-France, France.
The plant serves a population of approximately 2,100 residents in the Duisans area.
The treated wastewater is discharged into the local water system, which flows into the Scarpe River and eventually the Scheldt River basin, reaching the North Sea.
DUISANS SE provides advanced treatment, which includes nutrient removal beyond secondary treatment, meeting stringent standards under the EU Urban Waste Water Treatment Directive.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. For a plant serving around 2,100 people, secondary treatment is required, but DUISANS SE exceeds this with advanced treatment, likely due to the sensitivity of the receiving water body.
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