Overview
Ploudalmezeau Ranterboul is an advanced wastewater treatment plant in Tréompan, Brittany, France, serving about 4,883 people. It discharges treated water near the coast, operating under EU Urban Waste Water Treatment Directive standards.
Ploudalmezeau Ranterboul is an advanced wastewater treatment plant located in Tréompan, within the commune of Ploudalmézeau in the Finistère department of Brittany, France. The plant serves a population of approximately 4,883, placing it in the small-to-medium agglomeration category under French and EU regulations. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,000 cubic meters per day and an average discharge volume of 871.12 cubic meters per day, the facility operates well within its capacity. As a coastal plant within 10 km of the sea, it likely employs nutrient removal to protect the sensitive marine environment. The treated effluent is discharged into the local watershed, which drains into the Atlantic Ocean along the rugged Brittany coast. This region is known for its diverse marine life and important coastal habitats. The plant's advanced treatment helps minimize nutrient loading and protect water quality in the downstream coastal ecosystem.
Environmental context
The plant discharges into the coastal waters of the Iroise Sea, part of the Atlantic Ocean, which supports rich biodiversity including seabird colonies, seals, and diverse fish populations. The local watershed, characterized by small coastal rivers and estuaries, drains agricultural and rural areas. Advanced treatment at the plant reduces nutrient inputs, helping to prevent eutrophication in the sensitive marine environment.
Frequently asked questions
The plant is located at 27, Chemin de Lestéven, Kerlanou, Tréompan, in the commune of Ploudalmézeau, Finistère, Brittany, France.
The plant serves approximately 4,883 people, classifying it as a small-to-medium agglomeration under EU regulations.
The treated effluent is discharged into the local coastal watershed, which flows into the Iroise Sea and the Atlantic Ocean. Being within 10 km of the coast, the plant likely employs advanced treatment to protect the marine environment.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. For its population size, secondary treatment is mandatory, but the plant goes further with advanced treatment, likely due to its coastal location and the need to protect sensitive marine areas.
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