Borsodbota Szennyviztisztito Telep - Advanced Wastewater Treatment in Sajóvelezd, Hungary

Borsodbota Szennyviztisztito Telep is an advanced wastewater treatment plant located in Sajóvelezd, within the Borsod-Abaúj-Zemplén county of northern Hungary. The plant serves a population of 1,600 and has a designed capacity of 4,200 m³/day, with an average daily discharge of 188.61 m³. As an advanced treatment facility, it provides a higher level of pollutant removal than secondary treatment, ensuring compliance with stringent environmental standards. The plant operates under Hungary's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. Advanced treatment is typically mandated for sensitive areas or where receiving waters require additional nutrient removal. Its advanced classification indicates the use of tertiary processes such as nutrient removal or disinfection. The treated effluent is discharged into local water bodies that eventually drain into the Tisza River basin, a major tributary of the Danube. The plant plays a crucial role in protecting the region's water quality, supporting aquatic ecosystems, and safeguarding downstream communities and habitats. Its location in the Sajó Valley, an area with industrial and agricultural activity, underscores the importance of effective wastewater management.

The plant discharges into the Sajó River catchment, which flows into the Tisza River and ultimately the Danube River before reaching the Black Sea. This watershed supports diverse aquatic life and is an important ecological corridor in the Carpathian Basin. The advanced treatment helps reduce nutrient loads, mitigating eutrophication risks in downstream water bodies.