KA Gr Biewende - Advanced Wastewater Treatment Plant in Remlingen-Semmenstedt, Niedersachsen

KA Gr Biewende is an advanced wastewater treatment plant located in the Groß Biewende district of Remlingen-Semmenstedt, in the Landkreis Wolfenbüttel, Niedersachsen, Germany. The plant serves a population of 2,150 and is part of the municipal infrastructure managed by the Samtgemeinde Elm-Asse. As an advanced treatment facility, KA Gr Biewende goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive. The plant has a designed capacity of 4,430 cubic meters per day and currently treats an average daily flow of 544.11 cubic meters, indicating significant reserve capacity. The treated effluent is discharged into local watercourses that drain into the Oker River, a tributary of the Aller and Weser rivers, ultimately reaching the North Sea. The plant plays a key role in protecting the region's groundwater and surface water quality, supporting aquatic life in the Weser basin.

The plant discharges into small streams that feed the Oker River, part of the Weser basin. The Weser flows through central Germany into the North Sea, supporting diverse aquatic habitats. The region's agricultural landscape makes nutrient removal critical to prevent eutrophication in downstream waters.