Kállósemjén Szennyvíztisztító Telep - Advanced Wastewater Treatment in Kállósemjén, Hungary

Kállósemjén Szennyvíztisztító Telep is an advanced wastewater treatment facility located in Kállósemjén, within the Észak-Alföld region of Hungary. The plant serves a population of about 3,753, classifying it as a small agglomeration under Hungarian and EU regulations. 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 1,896 m³/day and an actual discharge volume of 442.41 m³/day, the facility operates well within its capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Tisza River basin, a major tributary of the Danube. This contributes to the protection of the Danube River ecosystem and the Black Sea, supporting aquatic life and water quality downstream.

The plant discharges into the Tisza River basin, which flows into the Danube and eventually the Black Sea. The region's flat terrain and agricultural land use mean that nutrient removal is important to prevent eutrophication in downstream water bodies. The advanced treatment helps reduce nitrogen and phosphorus loads, protecting aquatic habitats and drinking water sources.