CAYENNE Residence universitaire Wastewater Treatment Plant, Cayenne, French Guiana

CAYENNE Residence universitaire is a wastewater treatment facility located in Cayenne, the capital of French Guiana, an overseas department of France. The plant serves a population of 1,010 and is situated in the coastal urban area of Cayenne, near the Atlantic Ocean. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,000 m³/day and a current discharge volume of 180.18 m³/day, the facility operates well within its capacity. As a French overseas territory, the plant is subject to French and EU wastewater regulations, including the EU Urban Waste Water Treatment Directive, which requires advanced treatment for sensitive areas. The treated effluent is discharged into the coastal waters of the Atlantic Ocean, likely via a local river or estuary. The plant plays a key role in protecting the marine environment of French Guiana, which includes ecologically sensitive mangrove ecosystems and diverse aquatic life. Its advanced treatment helps reduce nutrient loading and safeguard water quality in the region.

The plant discharges into the Atlantic Ocean near Cayenne, which is part of the Guiana Shield region. The coastal waters support mangrove forests and estuarine habitats that are critical for fish nurseries and migratory birds. Advanced treatment at this facility helps minimize nutrient pollution and protects the sensitive marine ecosystem from eutrophication and harmful algal blooms.