Overview
DINAN Lanvallay wastewater treatment plant serves approximately 48,000 people in Taden, Bretagne, France. The facility operates under EU Urban Waste Water Treatment Directive standards for medium agglomerations.
DINAN Lanvallay is a wastewater treatment plant located in Taden, near Dinan in the Côtes-d'Armor department of Bretagne, France. It serves a population of approximately 48,000, classifying it as a medium agglomeration under EU regulations. The plant is situated in the Rance River basin, an area known for its tidal estuary and ecological significance. As a French facility serving over 15,000 population equivalents, DINAN Lanvallay is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For agglomerations of this size discharging into sensitive areas, tertiary treatment may be mandated. The treated effluent from DINAN Lanvallay is discharged into the Rance River, which flows into the Rance estuary and eventually the English Channel. The Rance estuary is a dynamic coastal environment supporting diverse aquatic life and migratory fish species. The plant's location within 50 km of the coast underscores the importance of effective nutrient removal to protect marine water quality.
Environmental context
The plant discharges into the Rance River, which flows into the Rance estuary and then the English Channel. The estuary is a tidal system with significant ecological value, supporting fish migration and diverse bird populations. Effective treatment is crucial to prevent nutrient enrichment and protect downstream coastal waters.
Frequently asked questions
DINAN Lanvallay is located in Taden, near Dinan in the Côtes-d'Armor department of Bretagne, France. The address is La Menardais, Taden, 22100.
The plant serves approximately 47,995 people, classifying it as a medium agglomeration under EU regulations.
Treated effluent from DINAN Lanvallay is discharged into the Rance River, which flows into the Rance estuary and then the English Channel.
As a French plant serving over 15,000 population equivalents, DINAN Lanvallay operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and may require tertiary treatment for sensitive areas.
For medium agglomerations in France, secondary treatment (biological treatment) is standard. In sensitive areas like the Rance estuary, tertiary treatment for nutrient removal may be required to protect water quality.
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