Overview
SJAELSMARK is an advanced wastewater treatment plant in Hørsholm, Denmark, serving 2,320 people. It discharges treated water near the coast of the Øresund strait.
SJAELSMARK wastewater treatment plant serves the Hørsholm area in the Capital Region of Denmark. The plant treats wastewater from approximately 2,320 residents, operating as part of the municipal infrastructure managed by Hørsholm Kommune. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive for agglomerations of this size. With a designed capacity of 4,350 cubic meters per day and a current discharge volume of 926.17 cubic meters per day, the facility has ample capacity headroom. Treated effluent from SJAELSMARK is discharged into the local watershed, which drains into the Øresund strait, a marine water body connecting the Baltic Sea to the Kattegat. The coastal discharge location necessitates advanced treatment to protect the sensitive marine environment, supporting diverse aquatic life and recreational uses.
Environmental context
The plant discharges into a coastal watershed that flows into the Øresund strait, a narrow marine passage between Denmark and Sweden. This water body is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for marine species. Advanced treatment helps minimize nutrient loading and protect the strait's water quality.
Frequently asked questions
SJAELSMARK is located in Hørsholm, in the Capital Region of Denmark, near the coast of the Øresund strait.
The plant serves approximately 2,320 people in the Hørsholm area.
Treated effluent from SJAELSMARK is discharged into the local watershed, which drains into the Øresund strait, a coastal marine environment.
Under the EU Urban Waste Water Treatment Directive, plants serving agglomerations under 10,000 population equivalents require appropriate treatment. SJAELSMARK employs advanced treatment, exceeding the minimum secondary treatment standard, which is typical for coastal plants to protect sensitive marine waters.
In Denmark, wastewater treatment plants serving small agglomerations like SJAELSMARK often use advanced treatment, including nutrient removal, to meet strict environmental standards for coastal discharge. This aligns with Danish implementation of the EU Water Framework Directive.
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