Overview
ALS ODDE is a closed secondary treatment plant in Hadsund, Denmark, with a designed capacity of 4,445 m³/day. It served the local community before closure.
ALS ODDE is a former wastewater treatment plant located in Hadsund, Mariagerfjord Municipality, in the North Denmark Region. The plant was designed with a capacity of 4,445 m³/day and provided secondary treatment to the local population before its closure. As a Danish plant, it operated under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges to freshwater and estuaries. Denmark implements this directive through national regulations enforced by the Danish Environmental Protection Agency. The plant's treated effluent was likely discharged into the Mariager Fjord, a significant coastal water body in northern Denmark. The fjord supports diverse marine life and is an important area for bird migration and fish spawning.
Environmental context
ALS ODDE discharged into the Mariager Fjord, a long, narrow inlet of the Kattegat Sea. The fjord is a nutrient-sensitive ecosystem that supports eelgrass beds, fish populations, and migratory birds. Its shallow waters and limited tidal exchange make it vulnerable to eutrophication from nutrient inputs.
Frequently asked questions
ALS ODDE is located at 35 Fjordparken in Hadsund, Mariagerfjord Municipality, Region Nordjylland, Denmark.
ALS ODDE had a designed capacity of 4,445 m³ per day, serving the local community with secondary treatment.
The plant is listed as closed, possibly due to consolidation of wastewater services or upgrades to newer facilities in the region.
As a Danish plant, ALS ODDE operated under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for discharges to sensitive areas like the Mariager Fjord.
ALS ODDE discharged treated wastewater into the Mariager Fjord, a coastal inlet of the Kattegat Sea, which is ecologically sensitive to nutrient pollution.
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