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January

Befesa to reduce the salinity of the water that goes into the treatment plants of the Baix Llobregat

January 25, 2010

  • The project is worth more than €8.4 million.
  • The works will prevent the flows with the highest salt concentrations reaching the treatment plants and will promote the reuse of treated water.

Madrid, 25 January 2010. Agencia Catalana del Agua, the public water company of the Catalonian regional government responsible for water management and planning, has awarded Befesa, in a joint venture with the Catalan firm Excavaciones y Construcciones Benjumea, the contract to carry out the works to segregate the area’s brackish water, to reduce the salinity of the water that reaches the treatment plants in Sant Feliu and Prat de Llobregat in Barcelona. The project requires an investment of more than €8.4 million.

Part of the water resources in this region come from the underground water course of the river Llobregat delta, where salinity problems affect urban waste water, a situation that is aggravated by the salt water produced by some industries. The output from the treatment plants of the Baix Llobregat therefore has a high salinity level which must be reduced in order to reuse the water for agricultural irrigation.

The objective of these works is to prevent the flows with the highest salt concentrations from entering the two treatment plants by directly connecting, at two points, some twenty outlets from various industries in this system to an existing salt water drain that runs along the course of the River Llobregat from the salt mines of Súria and Cardona until finally reaching the sea.

The awarded projects include the construction of a new network of industrial outlet drains divided into two areas. The first, the Sant Feliu system, will group the outlets from industries in the towns of Castellbisbal, Rubí and Sant Andreu de la Barca, while the second will be the El Prat de Llobregat system, which will combine the outlets from industries in this town and from Barcelona.

The network of drains is designed to carry a total flow of more than 21,000 cubic metres per day. The pipeline to the two connection points with the salt water drain will be made by constructing more than 22 kilometres of collector pipe with a varying diameter of between 100 and 400 millimetres, as well as 11 pumping stations.

Javier Molina, Chairman of Befesa, said "this award allows Befesa to continue to provide sustainable solutions faced with the scarcity of water thanks to the reuse of treated water. These activities contribute to sustainable development and to the conservation of our water resources".

Befesa, the environmental services subsidiary of Abengoa, focuses on providing environmental services to industry and the construction of environmental infrastructures. It is a public listed company with a market capitalisation in excess of €401 million (close 2009) (www.befesa.com).

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