Nagykallo Szennyviztisztito Telep - Secondary Wastewater Treatment in Nagykálló, Hungary

Nagykallo Szennyviztisztito Telep is a municipal wastewater treatment facility located in Nagykálló, in the Észak-Alföld region of Hungary. The plant serves a population of approximately 8,000 people and is part of the country's wastewater infrastructure managed under Hungarian regulations. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 11,350 m³/day and an average discharge volume of 945.77 m³/day, the facility operates well below its capacity, indicating room for future growth. 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, which supports diverse aquatic life and is an important water resource for the region.

The plant discharges into the Tisza River basin, which flows into the Danube River and eventually reaches the Black Sea. The Tisza is a significant river in Central Europe, supporting diverse fish populations and providing habitat for migratory birds. The plant's secondary treatment helps reduce nutrient loads, protecting downstream water quality in this ecologically sensitive watershed.