ARA Marchegg 323 GF - Advanced Wastewater Treatment in Marchegg, Niederösterreich

ARA Marchegg 323 GF is an advanced wastewater treatment plant located in Marchegg, a town in the Bezirk Gänserndorf district of Niederösterreich, Austria. The plant serves a population of approximately 1,224 residents and has a designed capacity of 4,200 cubic meters per day, with a current discharge volume of 379.30 units. As an advanced treatment facility, ARA Marchegg 323 GF likely incorporates nutrient removal processes to meet stringent effluent standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), advanced treatment is required for discharges into sensitive areas, which is common in the Danube basin. The plant's scale places it in the small agglomeration category, where secondary treatment is the baseline, but advanced treatment indicates a higher level of environmental protection. The plant's treated effluent is discharged into the local water system, which ultimately drains into the Danube River via the March River. The March River is a significant tributary of the Danube, supporting diverse aquatic life and serving as an important ecological corridor in the region. The advanced treatment helps protect downstream water quality in the Danube basin, which is a critical transboundary water resource.

The plant discharges into the March River, a tributary of the Danube River, which flows into the Black Sea. The March River supports a variety of fish species and provides habitat for migratory birds. The advanced treatment at ARA Marchegg helps reduce nutrient loading, protecting the downstream Danube ecosystem from eutrophication.