Overview
Solingen Ohligs wastewater treatment plant serves approximately 85,500 people in Solingen, Nordrhein-Westfalen, Germany. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this sca
Solingen Ohligs is a municipal wastewater treatment plant located in the Ohligs district of Solingen, in the state of Nordrhein-Westfalen, Germany. The plant serves an estimated population of 85,503, classifying it as a large agglomeration under EU regulations. Its location in the industrial and urbanized Bergisches Land region places it within a densely populated area with significant water management demands. As a German wastewater facility, Solingen Ohligs is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment for agglomerations of this size. Germany implements this directive through its national wastewater ordinance (Abwasserverordnung), with strict effluent standards. The treated effluent from Solingen Ohligs is discharged into the local water system, which ultimately drains into the Rhine River basin. The Rhine is one of Europe's most important waterways, supporting diverse aquatic life and serving as a major ecological corridor. The plant's operations help protect downstream water quality in the Rhine and its tributaries, contributing to the ecological health of the North Sea, where the Rhine discharges.
Environmental context
The plant discharges into the local water network that flows into the Wupper River, a tributary of the Rhine. The Rhine basin is a critical ecological zone in Europe, supporting migratory fish species and diverse freshwater habitats. The plant's effluent quality directly affects the Wupper and downstream Rhine ecosystems, where nutrient loading and pollutant control are key management priorities. The region's industrial history adds importance to maintaining high treatment standards to protect aquatic life and drinking water sources.
Frequently asked questions
The plant is located at Grenzstraße 57 in the Ohligs district of Solingen, Nordrhein-Westfalen, Germany.
The plant serves approximately 85,503 people, classifying it as a large agglomeration under EU wastewater regulations.
The treated effluent is discharged into the local water system, which flows into the Wupper River and eventually the Rhine River, draining into the North Sea.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), implemented in Germany via the national Abwasserverordnung, which sets strict standards for secondary treatment and nutrient removal for large agglomerations.
Under the EU Urban Waste Water Treatment Directive, agglomerations over 10,000 population equivalent require secondary biological treatment. Plants serving 85,000 people typically also include nutrient removal (nitrogen and phosphorus) to meet stringent German effluent standards.
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