Kölesd Szennyvíztisztító Telep - Secondary Wastewater Treatment in Kölesd, Hungary

Kölesd Szennyvíztisztító Telep is a municipal wastewater treatment plant located in Kölesd, a village in Tolna County, Hungary. The plant serves a population of approximately 1,650 residents, placing it in the small agglomeration category under Hungarian and EU regulations. It operates in the Dél-Dunántúl region, an area characterized by agricultural activity and small settlements. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 2,339 m³/day and currently treats an average daily flow of 194.51 m³, indicating significant spare capacity. Treated effluent is discharged into local watercourses that ultimately drain into the Danube River basin. The Danube is a major European river flowing into the Black Sea, supporting diverse aquatic ecosystems. The plant's operation helps protect downstream water quality in the Danube catchment, which is ecologically sensitive and supports numerous species of fish and migratory birds.

The plant discharges into small streams that feed into the Danube River basin, which flows through Hungary and several other countries before reaching the Black Sea. The Danube supports a rich diversity of aquatic life, including endangered sturgeon species and migratory fish. Protecting water quality in this basin is critical for maintaining ecological balance and supporting downstream communities and ecosystems.