KA Sandstedt - Advanced Wastewater Treatment Plant in Hagen im Bremischen, Niedersachsen

KA Sandstedt is an advanced wastewater treatment plant located in Sandstedt, part of the municipality of Hagen im Bremischen in the district of Cuxhaven, Niedersachsen, Germany. The plant serves a population of 4,542 and has a designed capacity of 7,000 cubic meters per day, with an average discharge volume of 591.43 cubic meters per day. As an advanced treatment facility, KA Sandstedt goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant's scale places it in the small agglomeration category (under 10,000 population equivalent), for which the directive requires appropriate treatment to protect receiving waters. The plant is located within 10 km of the North Sea coast, discharging treated effluent into the Weser River basin, which flows into the North Sea. The Weser estuary and adjacent coastal waters are ecologically sensitive, supporting diverse aquatic life and serving as an important migratory corridor for fish and birds. Advanced treatment helps minimize nutrient loading and protects the marine environment.

KA Sandstedt discharges into the Weser River basin, which drains into the North Sea via the Weser estuary. The coastal waters of the North Sea are ecologically sensitive, supporting diverse marine life and serving as a critical habitat for migratory fish and bird species. Advanced treatment at the plant reduces nutrient inputs, helping to prevent eutrophication in the downstream estuary and coastal zone.