Overview
LIGNE Route de petit mars is an advanced wastewater treatment plant in Ligné, Pays de la Loire, France, serving 2,600 people. It has a designed capacity of 3,000 m³/day and discharges 463.84 m³/day.
LIGNE Route de petit mars is an advanced wastewater treatment plant located in Ligné, within the Pays de la Loire region of France. The facility serves a population of approximately 2,600 residents and is designed to handle a capacity of 3,000 cubic meters per day, with an average discharge volume of 463.84 cubic meters per day. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), France requires appropriate treatment for agglomerations of this size, and advanced treatment is often mandated in sensitive areas to protect water quality. The plant discharges into the local watershed, which ultimately drains into the Loire River and then the Atlantic Ocean. The Loire basin is ecologically significant, supporting diverse aquatic life and serving as a migratory corridor for species such as Atlantic salmon. The advanced treatment helps minimize nutrient loading and protects downstream ecosystems.
Environmental context
The plant's treated effluent enters the local watercourse, which flows into the Erdre River, a tributary of the Loire River. The Loire River is one of France's major rivers, emptying into the Bay of Biscay in the Atlantic Ocean. The Loire basin supports a rich diversity of fish, birds, and plant life, and is an important ecological corridor. Advanced treatment at this plant helps reduce nutrient pollution, safeguarding water quality in the downstream environment.
Frequently asked questions
The plant is located on Route de Nort-Sur-Erdre, La Soudairie, in Ligné, Loire-Atlantique, Pays de la Loire, France.
The plant serves a population of approximately 2,600 people in the Ligné area.
The treated effluent is discharged into the local watercourse, which flows into the Erdre River and eventually the Loire River, reaching the Atlantic Ocean.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment, in line with EU standards for sensitive areas.
Under the EU UWWTD, agglomerations of this size (2,600 people) require appropriate collection and treatment. France implements the directive, and advanced treatment is often required in sensitive catchments to protect water bodies like the Loire River.
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