Overview
ARA Ottenschlag 4310 ZT is an advanced wastewater treatment plant serving Sallingberg, Niederösterreich, Austria. It treats wastewater for a population equivalent of 1,324 with a designed capacity of 2,600 m³/day.
ARA Ottenschlag 4310 ZT is an advanced wastewater treatment facility located in the village of Armschlag, part of the municipality of Sallingberg in the Bezirk Zwettl district of Niederösterreich, Austria. The plant serves a population equivalent of 1,324 and has a designed capacity of 2,600 m³/day, with an actual discharge volume of 462.47 m³/day, indicating it operates well below its 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 requires advanced treatment for sensitive areas. For a small agglomeration of this size, the directive mandates at least secondary treatment, but the plant's advanced level ensures high effluent quality. The treated wastewater is discharged into local watercourses that drain into the Kamp River, a tributary of the Danube. The Danube ultimately flows into the Black Sea. The plant's advanced treatment helps protect the sensitive aquatic ecosystems of the Kamp and Danube rivers, supporting biodiversity and water quality in the region.
Environmental context
The plant discharges into small streams that feed the Kamp River, a tributary of the Danube. The Danube is a major European river that flows into the Black Sea, supporting diverse aquatic life and serving as a critical migratory corridor. The advanced treatment at ARA Ottenschlag helps reduce nutrient loads, protecting downstream ecosystems from eutrophication and maintaining water quality in the sensitive Danube basin.
Frequently asked questions
ARA Ottenschlag 4310 ZT is located in Armschlag, a village in the municipality of Sallingberg, Bezirk Zwettl, Niederösterreich, Austria.
The plant serves a population equivalent of 1,324 people.
The treated wastewater is discharged into local streams that flow into the Kamp River, a tributary of the Danube, which ultimately reaches the Black Sea.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment, ensuring high effluent quality.
As an Austrian plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For a small agglomeration serving around 1,300 people, the directive requires at least secondary treatment; the plant's advanced treatment exceeds this standard.
Nearby plants