Overview
Rosenheim wastewater treatment plant serves approximately 280,000 people in Rosenheim, Bavaria, Germany. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Rosenheim wastewater treatment plant is a major municipal facility serving the city of Rosenheim and surrounding areas in Bavaria, Germany. With a population equivalent of approximately 280,000, it is classified as a large agglomeration under EU regulations. The plant is located in the district of Erlenau, near the Inn River. As a large agglomeration, the plant is required to meet stringent treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive mandates secondary treatment for all agglomerations above 2,000 population equivalent, and tertiary treatment for those discharging into sensitive areas. The plant's treatment processes are designed to comply with these requirements, ensuring effective removal of organic matter and nutrients. The treated effluent is discharged into the Inn River, a major tributary of the Danube. The Inn River flows through the Alps and the Bavarian foothills, supporting diverse aquatic ecosystems. The plant plays a critical role in protecting water quality in the Inn and downstream Danube basin, which ultimately drains into the Black Sea. Its operations help maintain ecological balance and support recreational and economic uses of the river.
Environmental context
The plant discharges into the Inn River, which flows northeast to join the Danube near Passau. The Danube then continues east through several countries before reaching the Black Sea. The Inn River supports a variety of fish species, including grayling and brown trout, and its riparian zones provide habitat for birds and mammals. The plant's nutrient removal helps prevent eutrophication in the Danube and Black Sea, which are sensitive to excessive nitrogen and phosphorus loads.
Frequently asked questions
The plant is located in the Erlenau district of Rosenheim, Bavaria, Germany, near the Inn River.
The plant serves approximately 280,000 people, classifying it as a large agglomeration under EU regulations.
Treated wastewater is discharged into the Inn River, which flows into the Danube and eventually the Black Sea.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for large agglomerations and tertiary treatment if discharging into sensitive areas.
Plants of this scale in Germany typically employ secondary treatment (biological) and often tertiary treatment for nutrient removal to meet EU standards and protect sensitive water bodies.
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