Overview
DERVAL Bondar nouvelle is an advanced wastewater treatment plant in Derval, Pays de la Loire, France, serving 2,550 people with a designed capacity of 4,000 m³/day.
DERVAL Bondar nouvelle is an advanced wastewater treatment plant located in Derval, within the Pays de la Loire region of France. The facility serves a population of approximately 2,550 and has a designed capacity of 4,000 m³ per day, with a reported discharge volume of 454.92 m³/day. The plant employs advanced treatment processes, which go beyond the secondary treatment requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (2,000-10,000 population equivalent), the directive mandates secondary treatment, but the plant's advanced level indicates a higher standard, likely to protect sensitive receiving waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Loire River basin. The plant's inland location, more than 10 km from the coast, reduces direct marine impact, but its advanced treatment helps safeguard downstream aquatic ecosystems and water quality in the region.
Environmental context
The plant discharges into the Loire River basin, which flows westward through the Pays de la Loire region and empties into the Bay of Biscay (Atlantic Ocean). The Loire is one of France's major rivers, supporting diverse aquatic life and providing water for agriculture and drinking. The advanced treatment at DERVAL Bondar nouvelle helps reduce nutrient loading and protect the ecological health of the river and its estuary.
Frequently asked questions
The plant is located at R 229, Derval, in the Loire-Atlantique department of the Pays de la Loire region, France.
The plant serves approximately 2,550 people in the Derval area.
The treated effluent is discharged into the local watershed within the Loire River basin, which flows to the Atlantic Ocean.
Under the EU UWWTD (91/271/EEC), agglomerations of 2,000-10,000 population equivalent require secondary treatment. DERVAL Bondar nouvelle provides advanced treatment, exceeding the directive's minimum requirements.
In France, plants of this scale typically provide secondary treatment as a minimum, but many, like DERVAL Bondar nouvelle, implement advanced treatment to meet local environmental standards and protect sensitive water bodies.
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