Overview
AUCHY HAISNES SE is a municipal wastewater treatment plant serving Auchy-les-Mines, Hauts-de-France, France. It treats wastewater for approximately 10,067 people under the EU Urban Waste Water Treatment Directive.
AUCHY HAISNES SE is a wastewater treatment plant located in Auchy-les-Mines, in the Hauts-de-France region of northern France. The facility serves a population of around 10,067, placing it in the medium agglomeration category under EU regulations. It is situated near the ZAC des Flandres industrial zone along Route Nationale. As a French plant serving a population between 2,000 and 15,000, it is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment as a minimum standard. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's operational details and specific treatment processes are not publicly available, but it operates within France's national regulatory framework enforced by local authorities. The plant discharges treated effluent into local watercourses that ultimately drain into the North Sea via the Lys and Scheldt river basins. The Hauts-de-France region features a dense network of canals and rivers, and the plant plays a role in protecting downstream aquatic ecosystems from nutrient pollution and organic load.
Environmental context
The plant's treated effluent flows into the local river system, part of the Scheldt basin, which drains through Belgium into the North Sea. This watershed supports diverse aquatic life and is important for migratory fish. The region's flat terrain and intensive agriculture make nutrient management critical to prevent eutrophication in downstream waters.
Frequently asked questions
AUCHY HAISNES SE is located in Auchy-les-Mines, in the Pas-de-Calais department of the Hauts-de-France region, northern France. Its address is Route Nationale, ZAC des Flandres.
The plant serves approximately 10,067 people, classifying it as a medium-sized agglomeration under EU wastewater treatment regulations.
The plant discharges treated effluent into local watercourses that are part of the Scheldt river basin, which ultimately flows into the North Sea.
As a French plant serving over 2,000 people, AUCHY HAISNES SE operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment and, if needed, more stringent treatment in sensitive areas.
For agglomerations of this size, the EU UWWTD requires secondary treatment (biological treatment). In sensitive catchments, tertiary treatment for nutrient removal may also be required.
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