Overview
Dissay Bourg is an advanced wastewater treatment plant in Dissay, Nouvelle-Aquitaine, France, serving about 5,290 people with a discharge volume of 943.73 m³/day.
Dissay Bourg is an advanced wastewater treatment plant located in Dissay, a commune in the Vienne department of Nouvelle-Aquitaine, France. The plant serves a population of approximately 5,290 and has a designed capacity of 8,500 m³/day, with an average discharge volume of 943.73 m³/day. It is situated inland, more than 50 km from the coast. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (5,290 population equivalent) are required to provide secondary treatment, but the plant's advanced level indicates a higher standard, likely due to the sensitivity of the receiving environment or local regulations. The treated effluent is discharged into a local watercourse that eventually drains into the Vienne River, a tributary of the Loire River. The Loire basin is ecologically significant, supporting diverse aquatic life and migratory fish species. The plant's advanced treatment helps protect downstream water quality and the broader Loire ecosystem.
Environmental context
The plant discharges into a local stream that flows into the Vienne River, a major tributary of the Loire River. The Loire basin is one of France's largest watersheds, supporting diverse aquatic habitats and migratory fish such as Atlantic salmon and European eel. The advanced treatment at Dissay Bourg reduces nutrient loads, helping to prevent eutrophication in downstream waters and maintain ecological balance.
Frequently asked questions
Dissay Bourg is located in Dissay, a commune in the Vienne department of Nouvelle-Aquitaine, France. The address is Chemin moulin de la Jonchère, Longève, Dissay.
The plant serves approximately 5,290 people, classifying it as a small to medium agglomeration under EU classification.
The treated effluent is discharged into a local watercourse that flows into the Vienne River, a tributary of the Loire River. The plant uses advanced treatment to ensure high-quality effluent.
Dissay Bourg provides advanced treatment, which includes nutrient removal beyond secondary treatment. This exceeds the EU Urban Waste Water Treatment Directive requirement for secondary treatment for agglomerations of this size.
Under the EU UWWTD, agglomerations with a population equivalent above 2,000 must have collecting systems and treatment. For those between 2,000 and 10,000 PE, secondary treatment is generally required. Dissay Bourg's advanced treatment goes beyond this standard, likely due to the sensitivity of the receiving water body.
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