MACAU Wastewater Treatment Plant, Macau, Nouvelle-Aquitaine, France

The MACAU wastewater treatment plant is located in Macau, within the Nouvelle-Aquitaine region of southwestern France. The facility serves a population of approximately 5,054 people and discharges an average of 901.62 cubic meters of treated wastewater per day. Its location near the Gironde estuary places it in a coastal-sensitive area. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity is 4,000 m³/day, indicating it operates below its maximum capacity. The treated effluent is discharged into the Gironde estuary, a major tidal estuary that flows into the Bay of Biscay and the Atlantic Ocean. The estuary supports diverse aquatic life and is an important migratory corridor for fish species. The plant's coastal proximity requires careful management to protect the sensitive marine environment.

The MACAU plant discharges into the Gironde estuary, which connects to the Bay of Biscay and the Atlantic Ocean. This estuary is ecologically sensitive, supporting diverse aquatic life and serving as a critical migratory corridor for fish. The plant's coastal location (within 10 km of the coast) necessitates compliance with stringent discharge standards to protect the downstream marine environment.