The Bens Wastewater Treatment Plant

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Ferrovial Business Lines Projects The Bens Wastewater Treatment Plant A Coruña, España The Bens WWTP Website 2M m³ of land 60000m² expansive Residents 600000 equivalents (capacity) Recovery 950 kW in 2 engines The Bens WWTP, designed for a population of 600,000 inhabitants, is undoubtedly an iconic project due to its technology and its complex location. Making a model of the terrain with its over two million cubic meters of soil was necessary for this project. In 1997, the “Improvement to A Coruña's purification and discharge” construction work was declared to be of general interest to the State (Law 22/1997). The objective was to provide the municipalities of A Coruña, Arteixo, Cambre, Culleredo, and Oleiros with an actual purification system that treated wastewater with a guarantee, allowing it to meet the demands of the European Union's guidelines on water quality. In this situation, the Bens WWTP was awarded  to the UTE composed of Ferrovial Agromán, S.A. and Cadagua, S.A.in June 2004. Technical assistance to managing the construction was handled by Noega Ingenieros, S.L. and Vaico Ingenieros Consultores, S.A. The new Bens WWTP was designed to serve a future population equaling 600,000 inhabitants, with the ability to treat a maximum flow of 6.7 m³/s of wastewater. The infrastructure also has a UV disinfection system and an underwater outfall that makes it possible to dilute the water treated at sea over  900 m from the coast. As such, it is in compliance with the European guidelines on purification/sanitation, water quality for  raising mollusks, water to be used in bathrooms, and sludge treatment for purification. Construction on this infrastructure - which occupies an expanse of nearly 60,000 m² located between the southwest slope of the Monte Alberto and the seaboard, between the inlet at Bens and Redonda Island - has meant significant work in moving earth. They had to make a model of the terrain over two million cubic meters, an area which is also undergoing preparation for the “Paseo marítimo,

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