Overview
The Marignane Saint Victoret Gignac la Nerthe wastewater treatment plant serves nearly 49,000 people in the Provence-Alpes-Côte d'Azur region of France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatmen
The Marignane Saint Victoret Gignac la Nerthe wastewater treatment plant is located in Marignane, within the Bouches-du-Rhône department of Provence-Alpes-Côte d'Azur, France. The facility serves a population of approximately 48,779, placing it in the medium-to-large agglomeration category under EU regulations. As a French plant serving over 15,000 people, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment as a minimum. The directive also mandates more stringent tertiary treatment if the receiving waters are designated as sensitive areas, such as those prone to eutrophication. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a facility sized for its service population. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Étang de Berre lagoon or the Gulf of Fos. This coastal region supports diverse marine life and is an important area for migratory birds. The discharge must comply with French regulations transposing the EU directive to protect the sensitive Mediterranean coastal environment.
Environmental context
The plant discharges into the watershed of the Étang de Berre, a large lagoon connected to the Mediterranean Sea via the Gulf of Fos. This lagoon is an ecologically sensitive area that supports diverse aquatic life, including fish and bird species. The Mediterranean coastal zone is subject to nutrient enrichment concerns, making advanced treatment important for protecting marine habitats.
Frequently asked questions
The plant is located in Marignane, in the Bouches-du-Rhône department of the Provence-Alpes-Côte d'Azur region in southern France.
The plant serves approximately 48,779 people, classifying it as a medium-to-large agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which drains into the Étang de Berre lagoon and ultimately the Mediterranean Sea.
As a French plant serving over 15,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment and potentially tertiary treatment if the receiving waters are sensitive.
For agglomerations of this size, French regulations typically require secondary biological treatment as a minimum. In sensitive areas like the Mediterranean coast, additional nutrient removal may be mandated to prevent eutrophication.
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