LYNDBY Wastewater Treatment Plant, Lejre, Denmark

LYNDBY is a wastewater treatment plant located in Lyndby Strand, Lejre, in the Region Sjælland of Denmark. The plant serves a population of 1,761 and is situated near the coast, reflecting the region's coastal settlement pattern. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,600 m³/day and an actual discharge volume of 549.43 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. Treated effluent from LYNDBY is discharged into the local watershed, which ultimately drains into the Kattegat sea. The coastal discharge point is within 10 km of the coast, making the plant's advanced treatment important for protecting the marine environment and supporting the ecological health of the Kattegat, a vital water body for biodiversity and fisheries.

The plant discharges into the local watershed that flows into the Kattegat, a sea area connecting the Baltic Sea to the North Sea. The Kattegat supports diverse marine life, including fish, seabirds, and benthic habitats. Advanced treatment at LYNDBY helps reduce nutrient loads, mitigating eutrophication risks in this ecologically sensitive coastal zone.