Gallur Wastewater Treatment Plant, Gallur, Aragón, Spain

The Gallur wastewater treatment plant is located in the town of Gallur, within the Ribera Alta del Ebro region of Zaragoza, Aragón, Spain. It serves a population of about 3,387 and has a designed capacity of 6,200 m³/day, with an average discharge volume of 613.88 m³/day. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. As a secondary treatment facility, Gallur removes organic matter and suspended solids through biological processes. The plant operates under Spain's national implementation of the EU directive, which mandates secondary treatment for all inland discharges from agglomerations with a population equivalent (PE) above 2,000. With a population served of 3,387, the plant meets this requirement. The plant's capacity utilization appears low, indicating ample headroom for future growth or seasonal variations. The treated effluent from Gallur is discharged into the local water system, which ultimately drains into the Ebro River basin. The Ebro River is one of Spain's major rivers, flowing into the Mediterranean Sea via the Ebro Delta, a ecologically sensitive area that supports diverse aquatic life and important bird habitats. The plant's secondary treatment helps protect downstream water quality in the Ebro basin.

The Gallur plant discharges into the Ebro River basin, which flows through northeastern Spain to the Mediterranean Sea. The Ebro Delta is a critical ecological zone supporting diverse aquatic life and migratory birds. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain water quality in the river system and minimize impacts on downstream ecosystems.