Ranis 1 Wastewater Treatment Plant - Ranis, Thüringen, Germany

Ranis 1 is a former wastewater treatment plant located in Ranis, a town in the Saale-Orla-Kreis district of Thüringen, Germany. The plant served a population of approximately 1,285 people and was designed with a capacity of 2,000 cubic meters per day, with an average discharge volume of 325.20 cubic meters per day. The facility is now closed and no longer operational. As an advanced treatment plant, Ranis 1 provided a higher level of treatment beyond secondary, likely including nutrient removal. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), German plants serving agglomerations of this size (under 2,000 population equivalent) are typically required to provide appropriate treatment, though advanced treatment is often applied in sensitive areas. The plant's closure may reflect consolidation of wastewater services in the region. Ranis lies in the Saale river basin, which drains into the Elbe River and ultimately the North Sea. The region is characterized by rolling hills and agricultural land, with the nearby Saale River supporting diverse aquatic life. The plant's advanced treatment would have helped protect local water quality in this ecologically sensitive area.

Ranis is situated in the Saale river basin, part of the Elbe drainage system that flows into the North Sea. The local watershed includes small streams feeding the Saale, which supports a variety of fish and macroinvertebrate species. The region's agricultural activity means that nutrient management is important to prevent eutrophication downstream. Although the plant is now closed, its advanced treatment would have reduced nitrogen and phosphorus loads, protecting the aquatic ecosystem.