The Campo Dalías seawater desalination plant will soon provide nearly 100,000 m3/day of water for 300,000 people in the western part of the Andalusian province of Almeria, in the South of Spain.
The Campo de Dalías project is part of the national desalination plant program launched by the Spanish Ministry for the Environment through Acuamed, the public water agency responsible for the development of the plan.
Costing 130 million euros, Veolia Water Solutions & Technologies was in charge of the process components, and Spanish companies Sando, Inypsa and Montajes Electricos Crescencio Perez were responsible for the construction, civil engineering and management components.
Produced water will be used for drinking and irrigation purposes.
The 97,200 m3/day plant will be operated by Veolia for 15 years and has been designed for an expansion to 129,600 m3/d should extra capacity be needed in the future.
The process begins with the intake of the raw water via a 1.6 kilometer-long submarine pipe.
The water is first pre-treated by a battery of 40 double-stage filters before going to the double-pass reverse osmosis. The first pass consists of six reverse osmosis skids, equipped with an Energy Recovery System (ERS) in the form of isobaric chambers.
A second reverse osmosis pass with six skids is required to reduce boron concentration under 0.5 mg/l to comply with irrigation requirements.
The water distribution network is also part of the work scope and includes a 41 km gravity distribution network to deliver the produced water to end users.
José Ángel Legaz, managing director for Veolia Water Technologies in Spain and Portugal, said: “Since last July, the plant has been providing water for agriculture and it will be operating at full capacity as of November to supply water to this water-scarce region of Spain.”
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