GUIGNES Wastewater Treatment Plant, Guignes, France

The GUIGNES wastewater treatment plant is located in Guignes, a commune in the Seine-et-Marne department of north-central France. It serves a population of approximately 4,475 residents as part of the municipal wastewater infrastructure. The plant operates under France's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment. The plant employs advanced treatment processes, going beyond the secondary treatment required for smaller agglomerations. With a designed capacity of 4,520 m³/day and an average daily discharge of 798.33 m³/day, the facility is operating well within its capacity. Advanced treatment typically includes nutrient removal to protect sensitive receiving waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Seine River basin. The Seine flows through Paris and into the English Channel, supporting diverse aquatic life and providing water for agriculture and industry. The plant's advanced treatment helps reduce nutrient loading and protect downstream ecosystems.

The plant discharges into the Seine River basin, which flows through the Île-de-France region and eventually reaches the English Channel. The Seine supports a variety of fish species and is an important ecological corridor. Advanced treatment at this plant helps minimize eutrophication risks in the river and its estuary.