Saudi Arabian Oil Company

Abadi A Mutairi

Tao Chen

Fahd Ibrahim Alghunaimi

Mohammed Abudullah Bataweel

Norah W Aljuryyed

Hind Saleh Aldossary

Mona Saad Dossary

A process of treating nano-filtration membrane retentate comprises introducing seawater comprising a sulfate ion concentration of greater than or equal to 3000 mg/l to the NF membrane to produce a retentate stream and a permeate stream, wherein the retentate stream has a sulfate ion concentration greater than or equal to 10,000 mg/l, and mixing barium additives comprising barium chloride dehydrate (BaClHO), barium chloride (BaCl), or both with the retentate stream to precipitate sulfate from the retentate stream to form barite (BaSO) and reduce the sulfate ion concentration, wherein the barium additives are added into the retentate stream at a barium ion concentration of greater than 10,000 mg/l.

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Dhahran, Saudi Arabia

Abadi A Mutairi