Overview
CHOISY AU BAC wastewater treatment plant serves Choisy-au-Bac, Hauts-de-France, France. It provides secondary treatment for a population of 2,900 with a designed capacity of 5,000 m³/day.
The CHOISY AU BAC wastewater treatment plant is located in Choisy-au-Bac, a commune in the Oise department of Hauts-de-France, France. The facility serves a population of approximately 2,900 residents and is situated near the Viaduc de Compiègne in the industrial zone north of the town. As a secondary treatment plant, it plays a key role in managing local wastewater for this small agglomeration. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving populations between 2,000 and 10,000 are required to provide secondary treatment, which CHOISY AU BAC meets. The plant has a designed capacity of 5,000 m³/day and currently discharges an average volume of 517.35 m³/day, indicating ample reserve capacity for future growth. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Oise River, a major tributary of the Seine. The Seine River flows through Paris and into the English Channel, supporting diverse aquatic ecosystems and providing water for agriculture and industry. The plant's operation helps protect downstream water quality in this densely populated region.
Environmental context
The plant discharges into the Oise River basin, which flows into the Seine River and eventually the English Channel. The Oise River supports a variety of fish species and is an important ecological corridor in the region. Downstream, the Seine estuary is a critical habitat for migratory birds and aquatic life, making effective wastewater treatment essential for maintaining water quality and biodiversity.
Frequently asked questions
The plant is located in Choisy-au-Bac, a commune in the Oise department of Hauts-de-France, France, near the Viaduc de Compiègne in the northern industrial zone.
The plant serves a population of approximately 2,900 residents in Choisy-au-Bac and surrounding areas.
The treated effluent is discharged into the local watershed, which drains into the Oise River, a tributary of the Seine River, and ultimately reaches the English Channel.
The plant provides secondary treatment, which is the required standard under the EU Urban Waste Water Treatment Directive for agglomerations of this size (2,000-10,000 population equivalent).
The plant has a designed capacity of 5,000 m³ per day, with a current average discharge of 517.35 m³/day, indicating significant spare capacity.
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