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AssigneeEcolab USA Inc.
InventorsChad Emigh, Corbin Ralph, Martin R. Godfrey, Thomas M. Miller, Timothy S. Keizer, Anthony G. Sommese
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The present invention generally relates to a method for separating solids from liquid in a slurry comprising solids and a liquid (e.g., an aqueous solution). More specifically, the method comprises contacting an effective amount of a high molecular weight polymeric flocculant with the slurry in a tanker truck or as the slurry is flowing to the truck, allowing the solids to settle during a settling time whereby the solids settle to the bottom of the tanker truck, and the liquid is removed from the tanker truck at a level above the settled solids. The high molecular weight polymeric flocculant can comprise repeat units derived from a cationic monomer, an anionic monomer, a nonionic monomer, or a combination thereof.
A process of separating solids from liquid in a slurry comprising solids and a liquid, the process comprising contacting an effective amount for separating solids from liquid of a high molecular weight polymeric flocculant with the slurry in a tanker truck or as the slurry is flowing to the tanker truck, allowing the solids to settle during a settling time, whereby the solids settle to the bottom of the tanker truck, and the liquid is removed from the tanker truck at a level above the settled solids, wherein the liquid comprises oil and an aqueous solution, the slurry is waste from a cold heavy oil production with sand process, and the high molecular weight polymeric flocculant has a weight average molecular weight of between about 5,000,000 Da and about 20,000,000 Da.
Dependencies are inferred from the claim text.