Overview
Granollers wastewater treatment plant serves approximately 122,883 people in Granollers, Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Granollers wastewater treatment plant is a municipal facility located in Granollers, in the province of Barcelona, Catalunya, Spain. It serves an estimated population of 122,883, classifying it as a large agglomeration under EU regulations. The plant is situated along the Passeig Fluvial, indicating its proximity to a riverine environment. As a facility serving over 100,000 people, the Granollers plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum for such agglomerations. In sensitive areas, tertiary treatment may be necessary to reduce nutrient loads. The plant's designed capacity is reported as 1.00, though the unit is unspecified; this likely refers to a capacity in cubic meters per day or population equivalent. The treated effluent from the plant is discharged into a local watercourse, which ultimately drains into the Mediterranean Sea via the Besòs River basin. The Besòs River flows through the metropolitan area of Barcelona and supports diverse aquatic life, though it has historically faced pressures from urbanization and industrial activity. The plant plays a key role in protecting downstream water quality and the coastal environment.
Environmental context
The Granollers plant discharges into the Besòs River basin, which flows through the Vallès Oriental region and into the Mediterranean Sea near Barcelona. The river supports a variety of fish and bird species and is an important corridor for migratory birds. The downstream coastal area includes ecologically sensitive habitats that benefit from reduced nutrient and pollutant loads from upstream treatment.
Frequently asked questions
The Granollers wastewater treatment plant is located at Passeig Fluvial, Granollers, in the province of Barcelona, Catalunya, Spain.
The plant serves approximately 122,883 people, classifying it as a large agglomeration under EU regulations.
The treated effluent is discharged into a local watercourse within the Besòs River basin, which flows into the Mediterranean Sea.
As a Spanish facility serving over 100,000 people, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment and, in sensitive areas, tertiary treatment.
Under the EU Urban Waste Water Treatment Directive, plants serving agglomerations larger than 100,000 population equivalent are required to have at least secondary treatment. In sensitive areas, such as those draining to the Mediterranean, tertiary treatment for nutrient removal is often mandated.
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