Overview
Almerich Idar Oberstein wastewater treatment plant serves Idar-Oberstein, Rhineland-Palatinate, Germany. It treats wastewater for approximately 29,565 people under EU Urban Waste Water Treatment Directive standards.
Almerich Idar Oberstein is a municipal wastewater treatment plant located in Idar-Oberstein, within the Rhineland-Palatinate region of Germany. The facility serves a population of around 29,565 residents, classifying it as a medium-sized agglomeration under European Union classification. Its location in the Nahe River basin places it within a region known for its gemstone and jewelry industries, which may influence the composition of incoming wastewater. As a German plant serving over 10,000 population equivalents, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary biological treatment as a minimum standard. For agglomerations of this size in sensitive areas, tertiary treatment for nutrient removal (nitrogen and phosphorus) is typically required to protect receiving waters. The plant's treatment processes are designed to meet stringent German effluent standards enforced by the Wasserhaushaltsgesetz (Water Resources Act). The treated effluent is discharged into the Nahe River, a tributary of the Rhine River. The Nahe flows through a valley known for its vineyards and natural landscapes before joining the Rhine near Bingen. The Rhine ultimately drains into the North Sea, making this plant part of a large international river basin. The facility plays a key role in maintaining water quality in the Nahe, supporting aquatic life and downstream uses such as drinking water abstraction and recreation.
Environmental context
The plant discharges into the Nahe River, a right-bank tributary of the Rhine River. The Nahe flows approximately 125 kilometers through Rhineland-Palatinate, joining the Rhine near Bingen. The river supports diverse aquatic ecosystems, including fish species such as brown trout and grayling. Downstream, the Rhine is a major European waterway that drains into the North Sea, making nutrient and pollutant control critical for both local and international water quality. The region's agricultural and industrial activities, including gemstone processing, require effective treatment to prevent ecological degradation.
Frequently asked questions
The plant is located at 541 Hauptstraße, in the Nahbollenbach district of Idar-Oberstein, Rhineland-Palatinate, Germany.
The plant serves approximately 29,565 residents, classifying it as a medium-sized agglomeration under EU standards.
The treated effluent is discharged into the Nahe River, a tributary of the Rhine River, which flows into the North Sea.
Under the EU UWWTD, plants serving over 10,000 population equivalents must provide secondary treatment. For sensitive areas like the Rhine basin, tertiary treatment for nutrient removal is typically required to protect water quality.
German plants must comply with the Wasserhaushaltsgesetz and EU directives, requiring at least secondary biological treatment. For discharges into sensitive rivers like the Nahe, advanced treatment for nitrogen and phosphorus removal is standard to meet strict effluent limits.
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