Hoganas avloppsreningsverk - Höganäs Municipal Wastewater Treatment Plant, Sweden

Hoganas avloppsreningsverk is the municipal wastewater treatment plant serving the coastal town of Höganäs in Skåne County, southern Sweden. The facility handles wastewater from a population of around 25,567, placing it in the medium agglomeration category under EU regulations. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), Sweden requires secondary treatment for discharges to freshwater and estuaries, and more advanced treatment for sensitive areas. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating it is sized to handle the local load. Treatment processes typically include mechanical, biological, and chemical steps to meet Swedish and EU standards. The plant discharges treated effluent into the Kattegat, a sea area between Sweden and Denmark, via local drainage. This coastal discharge is subject to stringent nutrient removal requirements to protect the marine environment, particularly from eutrophication. The Kattegat supports diverse marine life and is an important fishing and recreational area.

The plant's treated effluent flows into the Kattegat, a sea area connected to the North Sea and ultimately the Atlantic Ocean. The Kattegat is a nutrient-sensitive marine environment where excessive nitrogen and phosphorus can cause algal blooms and oxygen depletion. Sweden's implementation of the EU Urban Waste Water Treatment Directive mandates advanced treatment for plants discharging to such sensitive coastal waters, helping to protect the region's ecological balance and biodiversity.