Overview
HELFAUT SE is an advanced wastewater treatment plant serving Heuringhem, Hauts-de-France, France. It treats wastewater for approximately 1,966 people with a designed capacity of 2,000 m³/day.
HELFAUT SE is an advanced wastewater treatment plant located in Heuringhem, within the Saint-Omer area of Pas-de-Calais, Hauts-de-France, France. The plant serves a population of approximately 1,966, classifying it as a small agglomeration under French and EU regulations. Its designed capacity of 2,000 m³/day and current discharge volume of 350.73 m³/day indicate it operates well below capacity. 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. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. As a facility in the Hauts-de-France region, it operates under French water quality regulations enforced by the Agence de l'Eau Artois-Picardie. The treated effluent is discharged into local watercourses that drain toward the North Sea via the Aa River basin. The region's wetlands and canals are ecologically sensitive, supporting diverse aquatic life and migratory birds. The plant's advanced treatment helps minimize nutrient loading and protect downstream water quality in this low-lying, agriculturally intensive area.
Environmental context
HELFAUT SE discharges into the local drainage network of the Aa River basin, which flows through the Marais Audomarois (a vast wetland area) before reaching the North Sea near Gravelines. This region is ecologically sensitive, supporting diverse aquatic flora and fauna, including migratory bird populations. The advanced treatment level helps reduce nutrient pollution, safeguarding the wetland's ecological balance and the coastal marine environment.
Frequently asked questions
HELFAUT SE is located at Chemin des Marais, Heuringhem, in the Pas-de-Calais department of Hauts-de-France, France.
The plant serves approximately 1,966 people, corresponding to a small agglomeration under EU classification.
Treated effluent is discharged into local watercourses within the Aa River basin, which flows through the Marais Audomarois wetlands and ultimately into the North Sea.
HELFAUT SE provides advanced treatment, which includes nutrient removal beyond the secondary treatment mandated by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
As a French plant, HELFAUT SE operates under the EU Urban Waste Water Treatment Directive (91/271/EEC) and French water quality regulations enforced by the Agence de l'Eau Artois-Picardie.
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