KA Weyhausen - Advanced Wastewater Treatment Plant in Weyhausen, Niedersachsen

KA Weyhausen is an advanced wastewater treatment plant located in Weyhausen, a municipality in the Samtgemeinde Boldecker Land, Gifhorn district, Niedersachsen, Germany. The plant serves a population of approximately 5,766 and has a designed capacity of 9,000 m³/day, with a reported discharge volume of 953.43 m³/day. As an advanced treatment facility, KA Weyhausen 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 plant discharges treated wastewater into local watercourses that ultimately drain into the Aller River system, a tributary of the Weser River, which flows into the North Sea. The surrounding region features a mix of agricultural and urban land use, and the plant plays a key role in protecting downstream aquatic ecosystems from nutrient pollution.

The treated effluent from KA Weyhausen enters local streams that feed into the Aller River, a major tributary of the Weser River. The Weser flows through northern Germany before discharging into the North Sea. This watershed supports diverse aquatic life and is important for regional biodiversity. The advanced treatment at the plant helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream waters, including the sensitive coastal zone of the North Sea.