Hanerau Hademarschen Wastewater Treatment Plant - Advanced Treatment in Schleswig-Holstein

The Hanerau Hademarschen wastewater treatment plant is located in the municipality of Hanerau-Hademarschen in the district of Rendsburg-Eckernförde, Schleswig-Holstein, Germany. It serves a population of approximately 3,583 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant provides advanced treatment, which goes beyond the secondary treatment standard typically required for inland plants of this size. With a designed capacity of 8,000 m³/day and an average daily discharge of 510.63 m³, the plant operates well below its capacity. As a German facility, it is subject to the national wastewater regulations (Abwasserverordnung) which implement the EU UWWTD. Advanced treatment ensures high removal of nutrients and organic pollutants, protecting the local water environment. The treated effluent is discharged into a local watercourse that eventually drains into the North Sea via the Elbe River system. The plant plays a crucial role in safeguarding the water quality of the surrounding region, which includes ecologically sensitive areas such as the Schleswig-Holstein Wadden Sea National Park, a UNESCO Biosphere Reserve. The advanced treatment helps minimize nutrient loading and supports the health of downstream aquatic ecosystems.

The plant discharges into a small watercourse that flows into the Elbe River, which ultimately reaches the North Sea. The downstream environment includes the Wadden Sea, a highly productive intertidal zone that supports diverse bird populations, marine life, and seagrass beds. Advanced treatment at this plant helps reduce nutrient pollution, which is critical for preventing eutrophication in the coastal waters of the North Sea.