SKA MoeHLEN Wastewater Treatment Plant, Horb am Neckar, Germany

SKA MoeHLEN is an advanced wastewater treatment plant located in Horb am Neckar, a town in the Freudenstadt district of Baden-Württemberg, Germany. The plant serves a population of 2,650 and has a designed capacity of 2,500 m³/day, with an average discharge volume of 752.91 m³/day. As an advanced treatment facility, SKA MoeHLEN goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this scale (2,000-10,000 population equivalent) are required to provide secondary treatment, but advanced treatment is often implemented in sensitive areas or to meet higher water quality standards. The treated effluent is discharged into the local water system, which ultimately drains into the Neckar River, a major tributary of the Rhine. The Rhine basin is one of Europe's most important waterways, supporting diverse aquatic life and providing drinking water for millions. The plant's advanced treatment helps protect downstream ecosystems from eutrophication and pollution.

The plant discharges into the Neckar River basin, which flows into the Rhine River and eventually the North Sea. The Neckar is a regulated river that supports fish species such as barbel and chub, and its water quality is critical for downstream uses including drinking water abstraction and recreation. Advanced treatment at SKA MoeHLEN reduces nutrient loads, helping to prevent algal blooms and maintain ecological balance in the Rhine watershed.