Pohlheim _ Holzheim Wastewater Treatment Plant, Hessen, Germany

Pohlheim _ Holzheim is an advanced wastewater treatment plant located in Holzheim, a district of Pohlheim in the Landkreis Gießen, Hessen, Germany. The plant serves a population of approximately 2,200 residents, reflecting its role as a small-scale municipal facility in a rural setting. 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. With a designed capacity of 2,200 cubic meters per day, the plant is well-suited to handle the local wastewater load, and the current discharge volume of 765.72 cubic meters per day indicates operational headroom. The treated effluent is discharged into local watercourses that ultimately drain into the Lahn River, a tributary of the Rhine. The Rhine basin is a major European watershed, and the plant's advanced treatment helps protect downstream water quality and aquatic ecosystems in this densely populated and agriculturally active region.

The plant discharges into small streams that feed into the Lahn River, which flows into the Rhine. The Rhine basin supports diverse aquatic life and is an important migratory corridor for fish. Advanced treatment at this plant reduces nutrient and pollutant loads, helping to maintain the ecological health of these waterways.