Skogliheimen II Wastewater Treatment Plant, Ask, Norway

Skogliheimen II is a wastewater treatment plant located in Ask, a locality in Askøy municipality, Vestland county, Norway. The plant serves a small population of 81 people and has a designed capacity of 120 m³/day, with an average discharge volume of 35.13 m³/day. It provides secondary treatment, which is the standard level for small agglomerations under Norwegian regulations aligned with the EU Urban Waste Water Treatment Directive. The plant operates under Norway's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges to freshwater and estuaries. As a small facility, it meets the regulatory requirements for its scale. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into the local coastal waters of Vestland, which eventually flow into the North Sea. The plant's proximity to the coast (within 10 km) means its discharge can affect nearby marine ecosystems. The receiving waters support diverse aquatic life and are part of a region known for its fjords and coastal habitats.

The plant discharges into coastal waters near Askøy, which are part of the North Sea basin. These waters support diverse marine life, including fish, crustaceans, and seabirds. The area is ecologically sensitive due to its fjord ecosystems and proximity to spawning grounds. The secondary treatment reduces organic pollution, but nutrient removal may be limited, potentially contributing to local eutrophication risks in the coastal zone.