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Veolia Water wins two contracts in Angola

The two VWS treatment units, designed for DSME’s floating production storage and offloading vessel (FPSO), will be installed in the Cravo-Lirio-Orquidea-Violeta (CLOV) Fields. The project is expected to be completed in January 2012.

The ultrafiltration system and SRP will be installed on the FPSO topsides to provide the necessary seawater treatment for subsea well injection. The ultrafiltration unit, which is the pre-treatment step to the SRP, will have a capacity of 66,208 m3/day (391,288 BWPD) and the sulphate removal package will treat 59,496 m3/day (374,230 BWPD).

The fine filtered seawater (nominally 0.01µm) from the ultrafiltration system will provide the feed for the SRP, which will then remove sulphates and other divalent ions from injection water to enhance oil recovery using Dow Filmtec membranes. The removal of these ions reduces the tendency of barium sulphate and strontium sulphate scale to form in the reservoir, and enhances oil recovery.