Overview
CHALONNES SUR LOIRE nouvelle is a secondary treatment plant serving 4,250 people in Chalonnes-sur-Loire, France. It discharges 758.19 m³/day of treated wastewater into the local watershed.
CHALONNES SUR LOIRE nouvelle is a municipal wastewater treatment plant located in Chalonnes-sur-Loire, a commune in the Maine-et-Loire department of Pays de la Loire, France. The plant serves a population of 4,250 and is part of the region's infrastructure for managing domestic wastewater. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 8,000 m³/day and a current discharge volume of 758.19 m³/day, the plant operates well within its capacity, ensuring effective treatment before discharge. The treated effluent is discharged into the Loire River, which flows through the region and ultimately drains into the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Loire, a major European river that supports diverse aquatic life and is used for recreation and drinking water downstream.
Environmental context
The plant discharges into the Loire River, which flows through the Pays de la Loire region and empties into the Bay of Biscay (Atlantic Ocean). The Loire is one of France's longest rivers and supports a rich ecosystem, including migratory fish species such as Atlantic salmon and European eel. The river's watershed is ecologically sensitive, with extensive floodplain wetlands and riparian habitats that rely on good water quality. Secondary treatment at this plant helps reduce organic pollution and nutrient loads, mitigating eutrophication risks in the river and its estuary.
Frequently asked questions
The plant is located in Chalonnes-sur-Loire, a commune in the Maine-et-Loire department of the Pays de la Loire region, France. Its address is near the Loire River, along the D751 road.
The plant serves a population of 4,250 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The treated wastewater is discharged into the Loire River, which flows westward through the Pays de la Loire region and eventually reaches the Atlantic Ocean.
The plant provides secondary treatment, which is the minimum required by the EU Urban Waste Water Treatment Directive for agglomerations of this size. This typically involves biological processes to remove organic matter and suspended solids.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. For small agglomerations like this, secondary treatment is mandatory. The plant's discharge is also subject to French water quality standards to protect the Loire River.
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