Westerkappeln Velpe Wastewater Treatment Plant | Advanced Treatment in Nordrhein-Westfalen

Westerkappeln Velpe is an advanced wastewater treatment plant located in the Velpe district of Westerkappeln, in the Steinfurt district of Nordrhein-Westfalen, Germany. The plant serves a population of approximately 4,131 and has a designed capacity of 4,900 cubic meters per day, with an average discharge volume of 372 cubic meters per day. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The directive requires tertiary treatment for agglomerations over 10,000 population equivalent discharging into sensitive areas, but smaller plants like this one may also adopt advanced treatment to meet local water quality standards. The treated effluent is discharged into local watercourses that drain into the Ems River system, which flows northward through Lower Saxony into the North Sea. The plant plays a key role in protecting the region's surface waters from nutrient pollution, supporting aquatic life and downstream ecosystems.

The plant discharges into small streams that are part of the Ems River basin. The Ems River flows through Nordrhein-Westfalen and Lower Saxony before reaching the Dollart estuary and the North Sea. The region's waters support diverse aquatic habitats, including fish spawning grounds and migratory corridors for species such as salmon and eel. Advanced treatment helps minimize eutrophication risks in the sensitive coastal zone.