LE BONO Manelio Wastewater Treatment Plant, Le Bono, Brittany, France

LE BONO Manelio is an advanced wastewater treatment plant located in Le Bono, a commune in the Morbihan department of Brittany, France. The plant serves a population of 3,564 and has a design capacity of 7,000 m³/day, with a current discharge volume of 635.81 m³/day. It is situated near the coast, reflecting the region's coastal and estuarine environment. As an advanced treatment facility, LE BONO Manelio goes beyond secondary treatment to remove nutrients and other pollutants, which is particularly important for sensitive areas like the Brittany coast. The plant operates under France's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for agglomerations discharging into sensitive areas. The plant's scale (3,564 population equivalent) places it in the small-to-medium agglomeration category, where secondary treatment is the baseline, but advanced treatment is mandated for sensitive catchments. The treated effluent from LE BONO Manelio is discharged into the local watershed, which ultimately drains into the Gulf of Morbihan, a semi-enclosed marine basin connected to the Atlantic Ocean. The Gulf of Morbihan is an ecologically significant area known for its rich biodiversity, including seagrass beds, shellfish beds, and migratory bird populations. The plant's advanced treatment helps protect this sensitive coastal ecosystem from nutrient pollution and other contaminants.

LE BONO Manelio discharges treated wastewater into the local watershed that flows into the Gulf of Morbihan, a semi-enclosed marine inlet on the southern coast of Brittany. The Gulf of Morbihan is an ecologically sensitive area supporting diverse marine life, including seagrass meadows, shellfish populations, and important bird habitats. The plant's advanced treatment reduces nutrient loads, helping to prevent eutrophication and protect the ecological balance of this coastal environment.