Hoviksnas avr verk - Advanced Wastewater Treatment Plant in Höviksnäs, Sweden

Hoviksnas avr verk is a municipal wastewater treatment plant located in Höviksnäs, a locality in Tjörns kommun, Västra Götaland County, Sweden. The plant serves a population of 2,754 and has a designed capacity of 6,000 m³/day, with an average discharge volume of 432.33 m³/day. It is situated in a coastal area, within 10 km of the sea, reflecting the region's maritime geography. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a Swedish facility, it operates under national regulations that implement the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (2,754 PE), the directive requires secondary treatment, but Sweden often mandates advanced treatment in sensitive coastal areas to protect the marine environment. The treated effluent is discharged into the local coastal waters of the Skagerrak, part of the North Sea. This area supports diverse marine life and is important for fisheries and recreation. The plant's advanced treatment helps minimize nutrient loading, reducing the risk of eutrophication in the sensitive Baltic Sea region.

The plant discharges into coastal waters near Höviksnäs, which flow into the Skagerrak strait and ultimately the North Sea. This region is ecologically sensitive, supporting diverse marine habitats and serving as a spawning ground for fish species. Advanced treatment reduces nutrient inputs, helping to prevent algal blooms and maintain water quality in the surrounding archipelago.