Overview
Ugerlose wastewater treatment plant in Holbæk, Denmark, served 623 people with advanced treatment before closure. The facility discharged 123.44 m³/day and had a designed capacity of 2,000 m³/day.
Ugerlose wastewater treatment plant is located in Holbæk, within Region Sjælland, Denmark. The facility served a small population of 623 people and is now closed. It was situated inland, more than 10 km from the coast, but within 50 km of the Baltic Sea. The plant provided advanced treatment, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for agglomerations under 2,000 population equivalent. With a designed capacity of 2,000 m³/day and an actual discharge volume of 123.44 m³/day, the plant operated well below its capacity. The treated effluent was discharged into local watercourses that drain into the Isefjord, a shallow fjord connected to the Kattegat and the Baltic Sea. The Isefjord supports diverse aquatic life and is an important area for bird migration and fish spawning.
Environmental context
The plant's discharge entered local streams that flow into the Isefjord, a coastal lagoon system connected to the Kattegat and the Baltic Sea. The Isefjord is ecologically sensitive, supporting eelgrass beds, fish nurseries, and migratory bird populations. Advanced treatment at Ugerlose helped protect this downstream environment from nutrient pollution.
Frequently asked questions
Ugerlose wastewater treatment plant is located at Skovhusvejen 18, in Holbæk, Region Sjælland, Denmark.
The plant served a population of 623 people before its closure.
The treated effluent was discharged into local watercourses that drain into the Isefjord, a coastal lagoon system connected to the Kattegat and the Baltic Sea.
Ugerlose provided advanced treatment, which goes beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for small agglomerations.
In Denmark, small wastewater treatment plants serving fewer than 2,000 people are regulated under the EU Urban Waste Water Treatment Directive, which mandates appropriate treatment to protect receiving waters. Advanced treatment is often required in sensitive areas.
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