Overview
Hollen renseanlegg is a municipal wastewater treatment plant serving Høllen, Norway. It serves a population of approximately 13,609 and is located near the coast in Agder county.
Hollen renseanlegg is a municipal wastewater treatment plant located in Høllen, a coastal area within Kristiansand municipality in Agder county, Norway. The plant serves a population of around 13,609, placing it in the medium agglomeration category under Norwegian regulations. As a Norwegian facility, the plant operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into coastal waters. The plant discharges treated wastewater into the coastal waters of the Skagerrak, a strait connecting the North Sea to the Baltic Sea. This coastal environment supports diverse marine life and is an important area for fisheries and tourism. The plant's location near Høllen gjestehavn (guest harbor) underscores the need for effective treatment to protect local water quality and recreational uses.
Environmental context
The plant discharges into the Skagerrak, a coastal strait between Norway, Sweden, and Denmark that connects the North Sea to the Baltic Sea. This marine environment supports diverse aquatic life, including fish stocks and benthic habitats, and is a key area for commercial fishing and tourism. Effective wastewater treatment is essential to prevent nutrient enrichment and protect the ecological health of the Skagerrak.
Frequently asked questions
Hollen renseanlegg is located in Høllen, a coastal area within Kristiansand municipality in Agder county, Norway. The plant is situated near Høllen gjestehavn (guest harbor).
The plant serves a population of approximately 13,609 people, classifying it as a medium-sized agglomeration under Norwegian and EU wastewater regulations.
The plant discharges treated wastewater into the coastal waters of the Skagerrak, a strait that connects the North Sea to the Baltic Sea. The discharge location is near the coast, requiring treatment standards appropriate for sensitive marine environments.
As a Norwegian plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), implemented through national regulations. For agglomerations of this size (10,000-15,000 population equivalent), secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas.
In Norway, plants serving around 13,600 people are classified as medium agglomerations. Under the EU Urban Waste Water Treatment Directive, such plants generally require secondary treatment (biological treatment) as a minimum. For coastal discharges, treatment must prevent eutrophication and protect marine ecosystems.
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