ACCIONA Agua wins its first contract in Colombia

Mar 06, 2012

ACCIONA Agua has been awarded the Design, Build, Operation and Maintenance contract for the Bello Wastewater Treatment Plant (WWTP) in Medellin, Colombia, in a call for tender by the public utilities company Aguas Nacionales EPM de Medellín. The deal is worth, including construction and operation, around USD347 million (more than 260 million euros). Initially, the plant will service more than three million inhabitants.

The new Bello WWTP will treat wastewater from the municipalities of Medellin and Bello which will reach the plant via the Bello Interceptor, before being pumped into the Medellin River.
The plant is expected to receive around 120 metric tons a day of industrial, commercial and residential organic waste which will be treated using a range of biological, physical and chemical processes prior to being returned to the Medellin River. The objective is to take the river's dissolved oxygen to levels higher than those accepted worldwide as indicators of unpolluted rivers. Reducing the river's organic load helps to meet the water-quality target set by the Aburrá Valley Metropolitan Area which aims to bring down dissolved oxygen levels to an average 5mg/liter. This will help to revitalize a number of riverside areas which could be used for recreation or urban development purposes or could be landscaped.
The WWTP will have a design flow of 5m3/second and will process more than 75% of residential wastewater, covering overall 95% of the water discharged into the Medellin River.
ACCIONA Agua plans to build the necessary infrastructure in the space of 36 months and will handle O&M for a one-year period.
During the construction phase the Bello WWTP will generate around 1,200 direct and indirect jobs.

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