Overview
Venta de Baños wastewater treatment plant serves 18,000 people in Castilla y León, Spain. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations of this scale.
The Venta de Baños wastewater treatment plant is located in the municipality of Venta de Baños, in the province of Palencia, within the autonomous community of Castilla y León, Spain. The facility serves a population of approximately 18,000 residents, classifying it as a medium-sized agglomeration under EU regulations. As a Spanish wastewater treatment plant, Venta de Baños operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, transposed into Spanish law via the Royal Decree-Law 11/1995 and subsequent regulations. For agglomerations between 10,000 and 150,000 population equivalent, the directive requires secondary treatment (biological treatment) as a minimum standard, with more stringent requirements if the discharge enters sensitive areas. The plant's treated effluent is discharged into the local hydrological network, which ultimately drains into the Duero River basin. The Duero River flows westward through Spain and into Portugal, reaching the Atlantic Ocean near Porto. The receiving waters support diverse aquatic life and are important for regional agriculture and ecosystems.
Environmental context
The Venta de Baños treatment plant discharges into the Duero River basin, one of the major watersheds of the Iberian Peninsula. The Duero River flows approximately 897 km from its source in the Picos de Urbión to the Atlantic Ocean at Porto, Portugal. The basin supports a variety of aquatic habitats and is ecologically sensitive due to its role in sustaining biodiversity and water quality for downstream communities and agricultural areas.
Frequently asked questions
The Venta de Baños wastewater treatment plant is located at Camino de Dueñas, Venta de Baños, Palencia, in the autonomous community of Castilla y León, Spain.
The plant serves approximately 18,000 people, classifying it as a medium-sized agglomeration under EU regulations.
The plant discharges into the Duero River basin, which flows through Spain and Portugal to the Atlantic Ocean, helping protect water quality in the Duero watershed.
As a Spanish plant serving 18,000 people, it falls under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size, with additional nutrient removal if discharging into sensitive areas.
Under Spanish implementation of the EU UWWTD, plants serving 10,000 to 150,000 population equivalent typically employ secondary biological treatment, such as activated sludge or biofiltration, to meet effluent quality standards.
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