Overview
ROCHE DERRIEN is an advanced wastewater treatment plant in La Roche-Jaudy, Brittany, France. It serves about 3,140 people with a design capacity of 3,500 m³/day and discharges treated water near the coast.
ROCHE DERRIEN is a wastewater treatment plant located in La Roche-Jaudy, in the Brittany region of France. It serves a population of approximately 3,140 and is situated near the coast, reflecting the area's coastal and rural character. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive for agglomerations of this size. With a design capacity of 3,500 m³/day and a discharge volume of 560.17 m³/day, the facility operates well within its capacity, ensuring effective treatment. The treated effluent is discharged into the local watershed, which ultimately drains into the English Channel. The plant plays a key role in protecting the coastal environment and supporting the ecological health of the region's rivers and marine habitats.
Environmental context
The plant discharges into the local river system that flows into the English Channel near the Brittany coast. This coastal area supports diverse marine life and is important for migratory fish species. Advanced treatment helps minimize nutrient and pollutant loads, safeguarding water quality in the downstream estuary and coastal zone.
Frequently asked questions
The plant is located in La Roche-Jaudy, in the Côtes-d'Armor department of Brittany, France. Its address is D 6, Boured, La Roche-Derrien, La Roche-Jaudy, 22450.
The plant serves approximately 3,140 people, making it a small agglomeration under the EU Urban Waste Water Treatment Directive.
The treated wastewater is discharged into the local river system, which flows to the English Channel. The plant uses advanced treatment to ensure high-quality effluent.
As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 2,000 population equivalent. The plant's advanced treatment exceeds this minimum.
For small agglomerations (under 10,000 PE), French regulations generally require secondary treatment. However, plants in sensitive coastal areas may implement advanced treatment to protect marine environments.
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