Overview
The LIFFRE wastewater treatment plant serves Liffré, Bretagne, France, with a designed capacity of 1.00 m³/day. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The LIFFRE wastewater treatment plant is located in Liffré, a commune in the Ille-et-Vilaine department of Bretagne, France. It serves a population of approximately 8,270 people, classifying it as a small to medium agglomeration under EU regulations. The plant is situated in the inland region of Bretagne, away from the coast. As a French wastewater facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 2,000 and 10,000. The designed capacity is 1.00 m³/day, and the plant is expected to meet the directive's standards for biological treatment and nutrient removal where necessary. The treated effluent from the LIFFRE plant is discharged into the local watershed, which ultimately drains into the Vilaine River and then into the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Vilaine basin, supporting aquatic life and downstream ecosystems.
Environmental context
The LIFFRE plant discharges into the Vilaine River basin, which flows into the Atlantic Ocean via the Vilaine estuary. This watershed supports diverse aquatic habitats and is important for migratory fish species such as salmon and eel. The plant's treatment helps maintain water quality in the river, reducing nutrient loads that could otherwise contribute to eutrophication in the coastal zone.
Frequently asked questions
The LIFFRE plant is located at Impasse de la Groslais, La Cornillère, Liffré, in the Ille-et-Vilaine department of Bretagne, France.
The plant serves approximately 8,270 people in the commune of Liffré and surrounding areas.
The plant treats wastewater that is discharged into the Vilaine River basin, which flows into the Atlantic Ocean. It helps protect the water quality of the Vilaine and its tributaries.
Under the EU UWWTD, agglomerations with a population equivalent between 2,000 and 10,000, such as Liffré, are required to provide secondary treatment. The LIFFRE plant is expected to comply with these standards.
In France, plants serving this population typically use secondary biological treatment processes such as activated sludge or biofiltration, often with nutrient removal to meet EU standards for sensitive areas.
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