With this contract, Veolia Water will generate US$310m (£204) in revenue for the plant's design and construction, and US$92m (£60m) in revenue for its operation for 10 years, with an option to extend the contract for a further 20 years.
The plant will have a capacity of 178,000m3 per day and will supply the Sadara petrochemical complex, which is being built by Dow Chemical and Saudi Aramco in Jubail Industrial City II and is due to come on stream in June 2015. Dow Chemical and Aramco will produce solvents and glues for the automotive and packaging industries at the Sadara site. The water supplied will be used in this facility's two cooling towers and as boiler feed water.
Veolia Water, through its subsidiary Sidem, has designed a plant combining two seawater treatment solutions: ultrafiltration and reverse osmosis in order o meet the very strict water quality standards required by Marafiq and minimise the plant’s environmental impact.
After an initial treatment phase involving dissolved air flotation to capture the suspended particles in the water and ultrafiltration, the water will then be desalinated by reverse osmosis membranes before being remineralised. The combination of the processes is designed to ensure a secure water supply, limit the risk of plant failure and extend its lifespan, while at the same time reducing the site's energy requirements and costs.