Roma avloppsreningsverk - Advanced Wastewater Treatment Plant in Roma, Gotland, Sweden

Roma avloppsreningsverk is a municipal wastewater treatment plant located in Roma, on the island of Gotland, Sweden. The plant serves a population of 1,383 and is part of the wastewater infrastructure managed by the Gotland Municipality. Its location on Gotland places it within 50 km of the Baltic Sea coast, making its operations relevant to coastal water quality. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 2,000 population equivalent), the directive requires appropriate treatment, and Sweden often mandates higher standards to protect sensitive Baltic Sea waters. The plant's designed capacity is 2,500 m³/day, with an actual discharge volume of 217.11 m³/day, indicating significant reserve capacity. The treated effluent from Roma avloppsreningsverk ultimately reaches the Baltic Sea, a semi-enclosed sea with eutrophication challenges. The plant's advanced treatment helps reduce nutrient loads, contributing to the protection of Gotland's coastal ecosystems and the broader Baltic Sea environment. The island's karst geology also makes groundwater protection a key consideration.

The plant discharges treated wastewater into local watercourses that drain into the Baltic Sea, specifically the Gotland coastal basin. The Baltic Sea is a brackish water body sensitive to nutrient pollution, which can cause algal blooms and hypoxia. The advanced treatment at Roma avloppsreningsverk helps mitigate these impacts by reducing nitrogen and phosphorus loads. The surrounding area features agricultural land and forests, with groundwater resources that are vulnerable due to the island's limestone bedrock.