Overview
Marselisborg wastewater treatment plant serves Aarhus, Denmark, treating wastewater for approximately 172,450 people. It operates under the EU Urban Waste Water Treatment Directive, ensuring high environmental standards.
Marselisborg is a major wastewater treatment plant located in Aarhus, Denmark, in the Region Midtjylland. It serves a population of around 172,450, making it a large agglomeration under EU classification. The plant is situated near the coast of the Kattegat sea, an important marine environment. As a Danish facility, Marselisborg operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas. For a plant of this scale, tertiary treatment is typically required to protect coastal waters from nutrient pollution. The plant's designed capacity is 1.00 (likely in cubic meters per second or similar), indicating substantial infrastructure. The treated effluent from Marselisborg is discharged into the Kattegat, a strait connecting the North Sea and the Baltic Sea. This coastal discharge requires careful management to prevent eutrophication and protect marine biodiversity. The plant plays a key role in safeguarding the water quality of Aarhus Bay and the broader Kattegat ecosystem.
Environmental context
Marselisborg discharges treated wastewater into the Kattegat, a coastal sea area between Denmark and Sweden. The Kattegat is a sensitive marine environment that supports diverse aquatic life, including fish, seabirds, and marine mammals. Nutrient inputs from wastewater can contribute to algal blooms and oxygen depletion, so advanced treatment is critical for maintaining ecological balance in this region.
Frequently asked questions
Marselisborg is located in Aarhus, Denmark, in the Region Midtjylland. It serves the city of Aarhus and surrounding areas.
Marselisborg serves approximately 172,450 people, classifying it as a large agglomeration under EU regulations.
The treated wastewater from Marselisborg is discharged into the Kattegat, a coastal sea area. This requires advanced treatment to protect the marine environment.
Marselisborg operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary and often tertiary treatment for large agglomerations discharging into sensitive coastal waters.
In Denmark, plants serving over 150,000 people are typically required to provide tertiary treatment, including nutrient removal, to meet EU standards for sensitive areas like the Kattegat.
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