ARA Bockfliess 1313 MI Wastewater Treatment Plant, Großengersdorf, Niederösterreich

ARA Bockfliess 1313 MI is a wastewater treatment plant located in Großengersdorf, a municipality in the Bezirk Mistelbach district of Niederösterreich, Austria. The plant serves a population of approximately 1,449 people, reflecting its role in managing domestic wastewater for this small community. It is situated in a rural area within the Weinviertel region, known for its agricultural landscape and proximity to the Marchfeld basin. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for plants discharging into sensitive water bodies under the EU Urban Waste Water Treatment Directive (91/271/EEC). With a designed capacity of 2,500 m³/day and a reported discharge volume of 315.63 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variations. The treated effluent is discharged into local watercourses that ultimately drain into the Danube River basin. The Danube is a major European river that flows into the Black Sea, supporting diverse aquatic ecosystems and providing water for millions of people. The advanced treatment helps protect downstream water quality, particularly in the sensitive Danube delta region.

The plant discharges into small streams that feed into the March River, a tributary of the Danube. The Danube River flows through Central and Eastern Europe before emptying into the Black Sea. This watershed supports diverse aquatic life, including fish species such as sturgeon and migratory birds. The advanced treatment reduces nutrient loads, helping to prevent eutrophication in downstream lakes and coastal areas.