ARA GAV Krumau Polla 4085 ZT - Advanced Wastewater Treatment Plant in Pölla, Austria

ARA GAV Krumau Polla 4085 ZT is an advanced wastewater treatment plant located in Pölla, a municipality in the Zwettl district of Niederösterreich, Austria. The plant serves a population of 1,529 and has a designed capacity of 3,100 m³/day, with a current discharge volume of 230.41 m³/day, indicating ample reserve capacity. 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 mandates advanced treatment for sensitive areas. For a plant of this scale, the directive requires at least secondary treatment, and the advanced level reflects compliance with stricter standards for nutrient removal. The treated effluent is discharged into the Kamp River basin, which flows into the Danube River and ultimately the Black Sea. The plant plays a key role in protecting the Kamp River and downstream ecosystems, including the Danube Delta, by reducing nutrient loads and preventing eutrophication in this sensitive watershed.

The plant discharges into the Kamp River, a tributary of the Danube, which flows through the Waldviertel region and eventually reaches the Black Sea. The Kamp River supports diverse aquatic life and is part of a network of rivers that sustain the Danube's ecological health. The advanced treatment helps protect downstream waters from nutrient pollution, which is critical for maintaining water quality in the Danube Delta, an ecologically sensitive area.