KOLLUND OSTERSKOV Wastewater Treatment Plant, Kollund Østerskov, Denmark

KOLLUND OSTERSKOV is an advanced wastewater treatment plant located in Kollund Østerskov, a coastal settlement in Aabenraa Municipality, Region Syddanmark, Denmark. The plant serves a population of 2,182 and has a designed capacity of 10,500 m³/day, with a current discharge volume of 647.20 m³/day. As an advanced treatment facility, KOLLUND OSTERSKOV provides nutrient removal beyond secondary treatment, aligning with Denmark's stringent implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, Danish regulations typically require advanced treatment to protect sensitive coastal waters. The plant's treated effluent is discharged into the local coastal environment of the Little Belt, a strait connecting the Baltic Sea to the Kattegat. This area supports diverse marine life and is an important migratory corridor for fish and birds. The advanced treatment helps minimize nutrient loading and protects the ecological health of the coastal waters.

KOLLUND OSTERSKOV discharges into the coastal waters of the Little Belt, a strait that connects the Baltic Sea to the Kattegat and ultimately the North Sea. The Little Belt is ecologically sensitive, supporting diverse marine habitats, including seagrass beds and fish spawning grounds. The advanced treatment at this plant reduces nutrient inputs, helping to prevent eutrophication and maintain water quality in this important marine corridor.