Method of inhibiting scale formation and deposition in desalination systems
AssigneeNalco Company
InventorsPeter Blokker, Jasbir S. Gill, Paloma Lopez-Serrano
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Abstract
This invention relates to an improved method of inhibiting corrosion and calcium sulfate and calcium carbonate scaling in thermal and membrane desalination processes. The method includes adding a composition having an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, combined with a synergistically effective amount of oligomeric phosphinosuccinic acid to seawater or recirculation brine in a desalting process to produce water for drinking and industrial applications. The method also includes adding a composition including mono, bis, and oligomeric phosphinosuccinic acid adducts to the desalting process.
Claims19
A method of inhibiting formation and deposition of scale in a desalination process, the method comprising adding to a saline aqueous source of the desalination process an effective amount of a scale-inhibiting composition including (i) an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, wherein said copolymer optionally includes a fluorescent moiety and (ii) a synergistically effective amount of an oligomeric phosphosuccinic acid.
Dependencies are inferred from the claim text.