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Veolia Water has signed a design-build-operate contract with Plains Exploration and Production for a produced water reclamation facility at its Arroyo Grande oilfield in California.

The treatment system will incorporate Veolia’s Opus II technology to generate high-quality water.

The company will design, build and operate the facility, which has a capacity of 45,000 barrels per day, under a 12-year performance agreement.

It will also provide operations and maintenance services and performance guarantees on a fixed-fee basis to ensure design performance and high-quality recycled water.

The treated water will provide 25,000 barrels per day for use as once-through steam generation make-up and 20,000 barrels per day for surface water discharge, dewatering the Arroyo Grande reservoir.

The treatment process produces treated water that meets or exceeds state and federal permit requirements, and the dewatering of the reservoir will result in reduction of formation pressure, enabling increased crude-oil production at the site.

Opus II technology utilises Veolia Water’s Ceramem ceramic membranes as pre-treatment prior to ion exchange and reverse osmosis.

Prior to the agreement, the Opus II process was demonstrated on site in a pilot-scale study for a period of four months.

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