Overview
JOSSELIN Rive droite du canal is a wastewater treatment plant serving Guillac, Bretagne, France. It treats wastewater for approximately 10,765 people as part of the region's municipal infrastructure.
JOSSELIN Rive droite du canal is a wastewater treatment plant located in Guillac, within the Bretagne region of France. The plant serves a population of around 10,765 people, placing it in the medium agglomeration category under French and EU regulations. It is situated near the Canal de Nantes à Brest, a historic waterway that connects to the regional river network. As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment as a minimum for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a facility sized for its population equivalent. The treated effluent from the plant discharges into the local watershed, which ultimately drains into the Atlantic Ocean via the Vilaine River and the Gulf of Morbihan. The region is known for its diverse aquatic ecosystems, including coastal wetlands and estuaries that support migratory bird populations and marine life. Proper treatment is essential to protect these sensitive environments from nutrient pollution and other contaminants.
Environmental context
The plant discharges into the Canal de Nantes à Brest, which connects to the Oust River, a tributary of the Vilaine River. The Vilaine flows into the Atlantic Ocean via the Morbihan Gulf, a semi-enclosed coastal basin with rich biodiversity. This area supports important habitats for fish, shellfish, and migratory birds, making nutrient removal and pathogen control critical for maintaining water quality and ecosystem health.
Frequently asked questions
The plant is located in Guillac, a commune in the Morbihan department of Bretagne, France. Its address is near the Abbaye de Saint-Jean-des-Prés, along the Canal de Nantes à Brest.
The plant serves approximately 10,765 people, classifying it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent is discharged into the Canal de Nantes à Brest, which flows into the Oust River and eventually reaches the Atlantic Ocean via the Vilaine River and the Morbihan Gulf.
As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment and potentially tertiary treatment if the receiving waters are sensitive.
Under the EU UWWTD, plants serving between 10,000 and 150,000 people are required to have secondary treatment (biological treatment). In sensitive areas, additional nutrient removal may be required.
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