CAYENNE Lagune du Larivot, Cayenne

Overview

CAYENNE Lagune du Larivot is a secondary wastewater treatment plant in Cayenne, French Guiana, serving 1,250 people. It discharges 223 m³/day and is located within 10 km of the coast.

CAYENNE Lagune du Larivot is a wastewater treatment facility located in the Collery Industrial Zone of Cayenne, French Guiana. The plant serves a population of approximately 1,250 people and operates as part of the region's municipal wastewater infrastructure. French Guiana, as an overseas department of France, follows European Union environmental directives. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into sensitive areas. With a designed capacity of 3,360 m³/day and a current discharge volume of 223 m³/day, the plant operates well below its capacity. The facility is situated in a tropical climate near the Atlantic coast. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean. The coastal environment supports diverse marine life and mangrove ecosystems. Proper treatment is essential to protect these sensitive habitats from nutrient pollution and other contaminants.

Environmental context

The plant discharges into the coastal watershed of French Guiana, which flows into the Atlantic Ocean. The region's mangrove forests and estuaries provide critical nursery habitats for fish and crustaceans. Secondary treatment helps reduce organic load and suspended solids, protecting downstream marine ecosystems from eutrophication and maintaining water quality for biodiversity.

Frequently asked questions

The plant is located at 34 Rue Gilles Behary Laul Sirder, Zone Industrielle Collery 2, Cayenne, Guyane, 97300, France, in the Collery Industrial Zone.

The plant serves approximately 1,250 people in the Cayenne area.

The plant discharges treated effluent into the local coastal watershed, which flows into the Atlantic Ocean. It provides secondary treatment before discharge.

As a French facility in an overseas department, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges into sensitive coastal areas.

For small agglomerations under the EU directive, secondary treatment is standard. French Guiana's tropical coastal environment often necessitates additional nutrient removal to protect sensitive marine ecosystems.