KA Eystrup Wastewater Treatment Plant, Bücken, Niedersachsen

KA Eystrup is an advanced wastewater treatment plant located in Bücken, within the Samtgemeinde Grafschaft Hoya in Niedersachsen, Germany. The plant serves a population of approximately 9,500 people and has a design capacity of 14,000 m³/day, indicating it is sized to accommodate future growth or seasonal variations. 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 in Germany operating under the EU Urban Waste Water Treatment Directive (91/271/EEC), especially those discharging into sensitive water bodies. The plant's discharge volume averages 955.78 m³/day, well within its capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Weser River. The Weser flows northward through Niedersachsen and into the North Sea. The advanced treatment helps protect the Weser's water quality, supporting aquatic life and downstream ecosystems, including the Wadden Sea, a critical habitat for migratory birds and marine species.

The plant discharges into the Weser River basin, which flows through Niedersachsen and into the North Sea. The Weser is a major river supporting diverse aquatic life and is part of an ecologically sensitive estuary system. Advanced treatment at KA Eystrup helps reduce nutrient loading, protecting downstream habitats from eutrophication and maintaining water quality for fish and invertebrates.