Bologne Wastewater Treatment Plant - Grand Est, France | Advanced Treatment Facility

The Bologne wastewater treatment plant is located in the commune of Bologne, within the Grand Est region of France. It serves a population of approximately 2,200 residents, classifying it as a small agglomeration under French and EU regulations. The plant is situated in a rural area near the Marne River basin. The facility 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. With a designed capacity of 3,000 m³/day and a current discharge volume of 392.48 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into local waterways that ultimately flow into the Marne River, a major tributary of the Seine. This contributes to the protection of the Seine watershed, which supports diverse aquatic life and provides drinking water for downstream communities. The advanced treatment helps minimize nutrient loading and protects the ecological health of the receiving waters.

The plant discharges into the Marne River basin, which drains into the Seine River and eventually the English Channel. The Seine watershed is ecologically sensitive, supporting fish species such as pike and perch, and providing habitat for migratory birds. Advanced treatment at Bologne reduces phosphorus and nitrogen loads, helping to prevent eutrophication in downstream water bodies.