Overview
ORNUM wastewater treatment plant serves Kalundborg, Denmark, treating wastewater for approximately 7,250 people. The facility is located in Region Sjælland and operates under Danish regulations aligned with the EU Urban Waste Water Treatment Directiv
ORNUM is a wastewater treatment plant located in Kalundborg, Denmark, within Region Sjælland. The facility serves a population of approximately 7,250 people, making it a medium-sized agglomeration under EU classification. Its location near the coast of the Great Belt strait places it in a sensitive coastal environment. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving between 2,000 and 10,000 population equivalents in coastal areas are typically required to provide secondary treatment. Danish implementation of this directive ensures that ORNUM meets appropriate treatment standards to protect the receiving waters. The plant's designed capacity is 1.00 (likely in thousand cubic meters per day or similar unit), indicating it is sized to handle the local wastewater load. The treated effluent from ORNUM is discharged into the Great Belt, a major strait connecting the Baltic Sea to the Kattegat and ultimately the North Sea. This water body supports diverse marine life and is an important shipping route. The plant's operation helps maintain water quality in the coastal zone, which is ecologically sensitive due to nutrient loading concerns in the Baltic Sea region.
Environmental context
ORNUM discharges treated wastewater into the Great Belt, a strait that connects the Baltic Sea to the Kattegat and the North Sea. This coastal environment supports diverse marine ecosystems, including fish spawning grounds and migratory bird habitats. The Baltic Sea is particularly sensitive to nutrient pollution, making effective wastewater treatment crucial for preventing eutrophication and maintaining ecological balance in the region.
Frequently asked questions
ORNUM is located in Kalundborg, Denmark, in Region Sjælland. The plant is situated near the coast of the Great Belt strait.
ORNUM serves approximately 7,250 people, classifying it as a medium-sized agglomeration under EU wastewater treatment regulations.
The treated effluent from ORNUM is discharged into the Great Belt, a major strait connecting the Baltic Sea to the Kattegat and the North Sea.
As a Danish plant serving over 2,000 people in a coastal area, ORNUM falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment to protect sensitive coastal waters.
For plants of this size in coastal Denmark, secondary treatment is standard, often including biological processes to reduce organic matter and nutrients before discharge.
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