METHOD TO TREAT NANO-FILTRATION MEMBRANE RETENTATE FOR REUSE IN FRACTURING AND DRILLING APPLICATIONS

METHOD TO TREAT NANO-FILTRATION MEMBRANE RETENTATE FOR REUSE IN FRACTURING AND DRILLING APPLICATIONS

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 gr...

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Bibliographische Detailangaben
Hauptverfasser: Mutairi, Abadi A, Dossary, Mona Saad, Chen, Tao, Aljuryyed, Norah W, AlGhunaimi, Fahd Ibrahim, Bataweel, Mohammed A, Aldossary, Hind Saleh
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Zusammenfassung: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 (BaCl2.2H2O), barium chloride (BaCl2), or both with the retentate stream to precipitate sulfate from the retentate stream to form barite (BaSO4) 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.