KA Dollbergen: Advanced Wastewater Treatment Plant in Uetze, Niedersachsen

KA Dollbergen is an advanced wastewater treatment plant located in the Dollbergen district of Uetze, in the state of Niedersachsen, Germany. The plant serves a population of approximately 4,677 people and is part of the municipal infrastructure managed by the local authorities. As an advanced treatment facility, KA Dollbergen goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, ensuring high-quality effluent. The plant has a designed capacity of 9,999 m³/day and currently discharges 824.55 m³/day of treated wastewater. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, and advanced treatment is often applied in sensitive areas to protect water quality. The treated effluent from KA Dollbergen is discharged into local watercourses that eventually drain into the North Sea via the Weser or Elbe river systems. The plant plays a key role in protecting the region's waterways from nutrient pollution and supporting the ecological health of downstream environments.

The plant's discharge enters local streams that flow into the Aller or Leine rivers, which are part of the Weser basin. These waters ultimately reach the North Sea, supporting diverse aquatic life and migratory fish species. The region's agricultural land use makes nutrient removal critical to prevent eutrophication in downstream lakes and coastal zones.