Overview
GRISY SUISNES is an advanced wastewater treatment plant in Grisy-Suisnes, Seine-et-Marne, France. It serves a population of 2,140 with a designed capacity of 2,500 m³/day.
GRISY SUISNES is a wastewater treatment plant located in Grisy-Suisnes, a commune in the Seine-et-Marne department of north-central France. The facility serves a population of approximately 2,140 residents and is situated in the Île-de-France region, near the city of Melun. As a small-scale municipal plant, it plays a key role in local sanitation infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,500 m³/day and a reported discharge volume of 381.77 m³/day, the facility operates 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 ecosystems and providing drinking water for millions. The plant's advanced treatment helps reduce nutrient loading and protects downstream water quality in this densely populated region.
Environmental context
The plant discharges into the Seine River basin, which flows through the Île-de-France region before reaching the English Channel. The Seine supports a variety of fish species and is an important ecological corridor. Advanced treatment at this plant helps control nutrient pollution, which is critical for preventing eutrophication in downstream estuaries and coastal zones.
Frequently asked questions
The plant is located at Rue du Bois du Parc, Grisy-Suisnes, in the Seine-et-Marne department of the Île-de-France region, France.
The plant serves approximately 2,140 residents in the commune of Grisy-Suisnes and surrounding areas.
Treated effluent is discharged into the local watercourse, which flows into the Seine River basin and eventually reaches the English Channel.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent above 2,000 require secondary treatment. GRISY SUISNES provides advanced treatment, exceeding the minimum requirement.
In France, small to medium agglomerations typically employ secondary biological treatment, often with nutrient removal if discharging into sensitive areas. GRISY SUISNES uses advanced treatment, which includes additional steps like phosphorus removal or disinfection.
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