Albersdorf Wastewater Treatment Plant, Schleswig-Holstein, Germany

The Albersdorf wastewater treatment plant is located in the town of Albersdorf, in the district of Dithmarschen, Schleswig-Holstein, Germany. It serves a population of approximately 4,870, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated inland, about 10-50 km from the North Sea coast. The facility employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. With a designed capacity of 8,300 m³/day and a current discharge volume of about 592 m³/day, the plant operates well below its capacity, indicating room for future growth or efficient operation. The treated effluent is discharged into local watercourses that eventually drain into the North Sea. The plant plays a key role in protecting the sensitive coastal ecosystem of the Wadden Sea, a UNESCO World Heritage site, by reducing nutrient and pollutant loads. Its advanced treatment helps meet stringent German water quality standards.

The plant discharges into small streams that flow through the Dithmarschen region, eventually reaching the North Sea via the Elbe or Weser estuaries. The downstream environment includes the Wadden Sea, a highly productive intertidal zone that supports migratory birds, seals, and diverse marine life. Advanced treatment at this plant helps minimize eutrophication and protect this ecologically sensitive area.