ROELLBACH Wastewater Treatment Plant, Röllbach, Bavaria

ROELLBACH is a former wastewater treatment plant located in Röllbach, a municipality in the Miltenberg district of Bavaria, Germany. It served a small population of approximately 1,450 people, reflecting its role in a rural community. The plant was designed with a capacity of 3,000 cubic meters per day and operated with advanced treatment processes, ensuring high-quality effluent. As a German facility, ROELLBACH operated under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for small agglomerations. Advanced treatment goes beyond secondary standards, typically involving nutrient removal to protect sensitive water bodies. The plant's discharge volume of 366.96 cubic meters per day was directed to local watercourses, ultimately contributing to the Main River basin. The Main flows through Bavaria and Hesse before joining the Rhine, a major European waterway. The region's aquatic ecosystems benefit from advanced treatment, reducing nutrient loads and supporting biodiversity in the Rhine catchment.

The plant discharged into local streams that drain into the Main River, a tributary of the Rhine. The Rhine basin is ecologically significant, supporting diverse fish species and migratory birds. Advanced treatment helps minimize eutrophication risks in downstream waters, including the Rhine Delta and North Sea.