Ullareds nya ARV - Advanced Wastewater Treatment Plant in Ullared, Sweden

Ullareds nya ARV is a municipal wastewater treatment plant located in Ullared, Falkenberg Municipality, Halland County, Sweden. The plant serves a population of about 4,753 people, placing it in the small to medium agglomeration category under Swedish and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 7,400 m³/day and a current discharge volume of 746.13 m³/day, the plant has ample capacity for future growth. It operates under Sweden's implementation of the EU directive, which mandates strict nutrient removal in sensitive areas. The treated effluent is discharged into local watercourses that eventually drain into the Kattegat, a part of the North Sea. The receiving waters support diverse aquatic life and are important for both local ecology and regional water quality. The plant's advanced treatment helps protect downstream environments from nutrient pollution.

The plant discharges into local streams that flow into the Ätran River, which empties into the Kattegat near Falkenberg. The Kattegat is a transitional sea area between the North Sea and the Baltic Sea, supporting diverse marine life including fish, seabirds, and benthic communities. The region's coastal waters are sensitive to nutrient inputs, making advanced treatment crucial for preventing eutrophication and maintaining ecological balance.