Montbrió del Camp Wastewater Treatment Plant | Secondary Treatment, Catalunya

The Montbrió del Camp wastewater treatment plant is located in the Baix Camp comarca of Tarragona, Catalunya, Spain. It serves a population of 1,451 and operates with secondary treatment, a standard level for small agglomerations under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a designed capacity of 3,424 m³/day and currently discharges 352.04 m³/day of treated wastewater. As a facility in Spain, the plant is subject to national regulations transposing the EU Urban Waste Water Treatment Directive, which requires secondary treatment for agglomerations with a population equivalent (PE) between 2,000 and 10,000. For smaller populations like Montbrió del Camp, secondary treatment is still recommended to protect water quality. Typical secondary treatment in the region involves biological processes such as activated sludge or trickling filters. The treated effluent is discharged into the local hydrological network, which ultimately drains into the Mediterranean Sea. The plant plays a key role in protecting the coastal environment of the Costa Dorada, a popular tourist area. By reducing organic load and nutrients, it helps prevent eutrophication and maintains the ecological health of nearby rivers and the marine ecosystem.

The plant discharges into the local watershed that flows into the Mediterranean Sea near the Costa Dorada. This coastal area supports diverse marine life and is important for tourism and fisheries. The secondary treatment reduces organic pollutants and suspended solids, protecting the sensitive coastal ecosystem from nutrient enrichment and algal blooms.