Overview
LA CHAPELLE BASSE MER 1 Le Plessis is an advanced treatment plant in Divatte-sur-Loire, France, serving 3,850 people with a designed capacity of 5,000 m³/day.
LA CHAPELLE BASSE MER 1 Le Plessis is a wastewater treatment plant located in Divatte-sur-Loire, in the Pays de la Loire region of France. It serves a population of approximately 3,850 people, classifying it as a small agglomeration under French and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity is 5,000 m³/day, with an average discharge volume of 686.83 m³/day, indicating ample reserve capacity. The treated effluent is discharged into the local watershed, ultimately flowing into the Loire River, one of France's major rivers. The Loire River supports diverse aquatic ecosystems and is a vital water resource for the region. The plant's advanced treatment helps protect downstream water quality and ecological health.
Environmental context
The plant discharges into the Loire River basin, which drains into the Atlantic Ocean. The Loire River is known for its rich biodiversity, including migratory fish species such as Atlantic salmon and European eel. The advanced treatment at this plant helps minimize nutrient and pollutant loads, supporting the ecological integrity of the river and its estuary.
Frequently asked questions
The plant is located in Divatte-sur-Loire, in the Pays de la Loire region of France, along the Levée de la Divatte.
The plant serves approximately 3,850 people, making it a small agglomeration under EU classification.
Treated wastewater is discharged into the local watershed, which ultimately flows into the Loire River and then to the Atlantic Ocean.
The plant provides advanced treatment, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for small agglomerations.
French wastewater treatment plants operate under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations over 2,000 population equivalent. This plant's advanced treatment goes beyond the minimum requirements.
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