ARA Petronell Carnuntum 809 BL - Advanced Wastewater Treatment in Bad Deutsch-Altenburg, Austria

ARA Petronell Carnuntum 809 BL is an advanced wastewater treatment plant located in Bad Deutsch-Altenburg, in the state of Niederösterreich, Austria. The plant serves a population of approximately 1,582 people and has a designed capacity of 3,000 cubic meters per day, with an average discharge volume of 610 cubic meters per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As an Austrian facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas. The plant's scale places it in the small agglomeration category, for which secondary treatment is typically mandated, but the advanced level indicates a higher environmental standard. The treated effluent is discharged into the local water system, which ultimately drains into the Danube River basin. The Danube is a major European waterway that flows into the Black Sea, supporting diverse aquatic ecosystems. The plant's advanced treatment helps protect downstream water quality and ecological health.

The plant discharges into the Danube River basin, which flows through Central and Eastern Europe before reaching the Black Sea. The Danube supports a rich diversity of fish and bird species and is an important migratory corridor. Advanced treatment at this plant helps reduce nutrient loads, protecting the river's ecological balance and downstream environments.