1544042042 KA Danndorf Wastewater Treatment Plant, Grafhorst, Niedersachsen

1544042042 KA Danndorf is a municipal wastewater treatment plant located in Grafhorst, within the Samtgemeinde Velpke, Landkreis Helmstedt, Niedersachsen, Germany. The plant serves a population of approximately 3,800 and has a designed capacity of 5,500 m³/day, with a current discharge volume of 552.24 m³/day. The plant employs advanced treatment processes, which go beyond the secondary treatment standards required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The treated effluent is discharged into local waterways that ultimately drain into the Aller river system, a tributary of the Weser, which flows into the North Sea. The plant plays a key role in maintaining water quality in the region, supporting aquatic life and downstream ecosystems.

The plant discharges into the local drainage network that feeds the Aller river, a major tributary of the Weser. The Weser basin supports diverse aquatic habitats and is an important corridor for migratory fish species. Advanced treatment at this plant helps reduce nutrient loading, protecting downstream water quality in the North Sea coastal zone.