Kallerup Wastewater Treatment Plant, Hedehusene, Denmark

Kallerup wastewater treatment plant is located in Hedehusene, within the Høje-Taastrup Kommune of Region Hovedstaden, Denmark. The plant serves a population of approximately 7,882 and has a designed capacity of 1.00, indicating it is a small to medium-scale facility. As a Danish plant, Kallerup operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Denmark implements this directive through national legislation, ensuring that discharges meet stringent standards to protect water quality. The plant's treated effluent is discharged into local watercourses that eventually drain into the Øresund, the strait between Denmark and Sweden. This coastal discharge area supports diverse marine life and is an important ecological zone, requiring careful management of nutrient loads to prevent eutrophication.

The plant discharges into local streams that flow into the Øresund, a major Baltic Sea strait. This coastal environment supports diverse aquatic life, including fish and bird species, and is an important migratory corridor. Nutrient management is critical to avoid eutrophication in the sensitive marine ecosystem.