Brande Hornerkirchen Wastewater Treatment Plant, Brande-Hörnerkirchen, Schleswig-Holstein

Brande Hornerkirchen wastewater treatment plant is located in Brande-Hörnerkirchen, a municipality in the district of Pinneberg, Schleswig-Holstein, Germany. The plant served a population of approximately 1,905 people and is now closed. The plant provided secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity was 2,600 cubic meters per day, with an average discharge volume of 482.11 cubic meters per day. The treated effluent was discharged into local water bodies that drain into the North Sea via the Elbe River. The plant's operation contributed to protecting the sensitive coastal and marine environment of the Wadden Sea, a region of high ecological importance.

The plant's discharge ultimately reaches the North Sea via the Elbe River basin. The downstream environment includes the Wadden Sea, an ecologically sensitive intertidal zone that supports diverse bird populations and marine life. Proper wastewater treatment is critical to prevent nutrient pollution and maintain water quality in this coastal ecosystem.