France's First Energy-Positive Waste Water Treatment Plant
In the southern France resort town of Cagnes-sur-Mer, Veolia is building the country’s first wastewater treatment plant with a positive energy balance. Christened “Aeris,” the plant will treat the wastewater of 160,000 inhabitants of Nice Côte d'Azur and other neighboring municipalities.
It will be equipped with Spidflow® primary treatment, new generation Biostyr® Duo filters and low temperature sludge drying to achieve up to 90% of dryness.
The sludge is digested in two reactors and the biomethane produced is exported to the Natural Gas distribution grid after upgrading for CO2 removal. To ensure it produces more energy than it consumes, in all seasons, the design relies on good insulation and controls on energy consumption. With advanced controls to avoid noise and olfactory nuisances, the plant’s contemporary architecture integrates it in perfect harmony with its surrounding environment.