Lehnin Wastewater Treatment Plant: Advanced Treatment in Kloster Lehnin, Brandenburg

The Lehnin wastewater treatment plant is located in Kloster Lehnin, a municipality in the Potsdam-Mittelmark district of Brandenburg, Germany. It serves a population of approximately 4,526 residents, providing advanced treatment to protect local water quality. The plant operates under Germany's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets stringent standards for wastewater treatment in sensitive areas. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for plants discharging into sensitive water bodies or serving areas with high environmental standards. The designed capacity of 21,000 cubic meters per day indicates the plant is sized to accommodate future growth, while current discharge volume is 580.06 cubic meters per day, reflecting the current service population. The treated effluent is discharged into local waterways that ultimately drain into the Havel River and then the Elbe River, which flows into the North Sea. The region is characterized by numerous lakes and wetlands, including the nearby Kloster Lehnin lake district, which supports diverse aquatic life and provides important habitat for migratory birds. The advanced treatment helps maintain the ecological health of these sensitive freshwater ecosystems.

The plant discharges into the Havel River basin, which flows into the Elbe River and eventually the North Sea. The surrounding area includes the Kloster Lehnin lake district, a network of glacial lakes and wetlands that support diverse aquatic flora and fauna. These water bodies are ecologically sensitive, providing habitat for fish, amphibians, and waterfowl, and are important for regional biodiversity. Advanced treatment at the plant helps reduce nutrient loading, protecting these ecosystems from eutrophication.