Overview
CHEROY wastewater treatment plant in Blennes, Île-de-France, France, provides secondary treatment for a population of 1,060. The plant has a designed capacity of 2,500 m³/day and discharges 189.10 m³/day of treated effluent.
The CHEROY wastewater treatment plant is located in Blennes, a commune in the Seine-et-Marne department of Île-de-France, France. Serving a population of 1,060, this facility is part of the region's decentralized wastewater infrastructure, handling domestic sewage from the local community. The plant operates with secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. With a designed capacity of 2,500 m³/day and an average daily flow of 189.10 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into a local watercourse, which ultimately drains into the Seine River basin. The Seine River flows through Paris and into the English Channel, supporting diverse aquatic life and providing water for agriculture and industry. The plant's secondary treatment helps protect downstream water quality by reducing organic pollutants and suspended solids.
Environmental context
The plant discharges into a tributary of the Seine River, which flows through the Île-de-France region and eventually reaches the English Channel. The Seine basin supports a variety of fish species, including pike and perch, and is an important ecological corridor. The secondary treatment process reduces biochemical oxygen demand and suspended solids, helping to maintain the health of the river ecosystem and comply with EU water quality standards.
Frequently asked questions
The CHEROY plant is located on D 28 in Blennes, a commune in the Seine-et-Marne department of Île-de-France, France.
The plant serves a population of 1,060, typical of a small agglomeration in rural Île-de-France.
The plant provides secondary treatment, a biological process that removes organic matter and suspended solids before discharge.
The plant discharges into a local tributary of the Seine River, helping to protect the Seine basin and downstream ecosystems.
As a French plant serving fewer than 2,000 people, it falls under the EU Urban Waste Water Treatment Directive, which requires appropriate treatment to protect receiving waters.
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