# US 2015/0144572 A1 · Particle suspensions of flocculating polymer powders and powder flocculant polymer blends > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0144572 A1 - Document ID: US20150144572A1 - Status: Published application - Kind: A1 - Application number: 14/092,385 - Filed: 2013-11-27 - Published: 2015-05-28 - Earliest claimed: 2013-11-27 - Assignees: Psmg, LLC - Applicants: Psmg, LLC - Inventors: Jason Holt - Web page: https://patentgrep.com/patent/US20150144572A1 ## CPC - C02F 11/147: using organic substances (C02F11/148 takes precedence) - C02F 1/56: Macromolecular compounds - C08L 33/26: Homopolymers or copolymers of acrylamide or methacrylamide - C08L 39/00: Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers - C08L 71/02: Polyalkylene oxides - C02F 2103/10: from quarries or from mining activities - C02F 2103/28: from the paper or cellulose industry - C02F 2303/00: Specific treatment goals - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/03: containing three or more polymers in a blend - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Powder blends are described comprising blends of particulate water soluble high molecular weight polymer flocculants. The polymer flocculants can include polyethylene oxide, polyDadmac, Dadmac-acrylamide copolymers, copolymers thereof and combinations thereof. The powder blends allows the use of fine powders while reducing potential air quality and safety issues. The powder blends can be used for waste water purification, fiber dewatering, and the like. The powder blends can be diluted by a water dilution flow prior to entering a waste water stream. ## Claims ### Claim 1 A method for treating a liquid, the method comprising: delivering a powder blend of flocculating polymers from a reservoir into an aqueous treatment stream at a selected concentration, the delivering process comprising direct delivery of powder blend into the aqueous treatment stream and/or delivering the powder blend into a dilution water flow to form an initial aqueous combination that is flowed into the waste stream within 5 minutes of forming the combination, wherein the powder blend comprises a particulate water soluble flocculant polymer different from polyDadmac having a molecular weight of more than 100,000 g/mol and polyDadmac, wherein the powder blend has a concentration of flocculant polymer from about 1 weight percent to about 60 weight percent, and wherein the flocculant polymer has a particulate size providing for dissolving into water at low concentration in no more than about 5 minutes. ### Claim 2 (depends on 1) The method of claim 1 wherein the flocculant polymer is polyethylene oxide. ### Claim 3 (depends on 1) The method of claim 1 wherein the powder blend is formed into an aqueous combination prior to delivering it into the treatment stream. ### Claim 4 (depends on 3) The method of claim 3 wherein the aqueous combination is delivered it into the treatment stream in no more than 60 seconds. ### Claim 5 (depends on 3) The method of claim 3 wherein the aqueous combination is delivered into the treatment stream in no more than 15 seconds. ### Claim 6 (depends on 1) The method of claim 1 wherein the treatment stream originates from coal mining, mineral mining operation, fiber dewatering, paper processing or paper sheet formation. ### Claim 7 (depends on 1) The method of claim 1 wherein the treatment with the flocculant polymers provides or facilitates water clarification, suspended solids separation, treatment flow thickening, dissolved air floatation, selective mineral separation, dredging, belt press or centrifuge dewatering, settling pond or reservoir impoundment, paper sheet formation, stickies control, paper drainage aid, and/or fiber dewatering. ### Claim 8 (depends on 1) The method of claim 1 wherein the treatment stream is delivered to a settling tank. ### Claim 9 (depends on 8) The method of claim 8 wherein the delivery into the treatment stream is performed at least 5 meters from the inflow into the settling tank. ### Claim 10 (depends on 1) The method of claim 1 wherein the polyDadmac has an average molecular weight of at least about 100,000 g/mole and an average particle size from about 0.5 microns to about 150 microns. ### Claim 11 (depends on 1) The method of claim 1 wherein the flocculating polymer comprises polyethylene oxide having an average molecular weight from about 3,000,000 g/mol to about 15,000,000 g/mol. ### Claim 12 (depends on 1) The method of claim 1 wherein the powder blend comprises particulate polyethylene oxide having at least about 60 weight percent of the particles having a particle diameter of no more than about 75 microns. ### Claim 13 (depends on 1) The method of claim 1 wherein the powder blend has from about 5 to about 45 weight percent polyethylene oxide. ### Claim 14 A method for treating a liquid, the method comprising: delivering a suspension comprising a flocculating polymer from a reservoir into an aqueous waste stream at a selected concentration, the delivering process comprising delivery of the polymer suspension into a dilution water flow to form an initial aqueous combination that is flowed into the process stream within 5 minutes of forming the combination, wherein the polymer suspension comprises particulate polyethylene oxide suspended in a liquid polyether polyol having a molecular weight of at least about 150 g/mol. ### Claim 15 A powder blend comprising a particulate polyethylene oxide having an average molecular weight of at least 100,000 g/mol and a particulate polyDadmac wherein the powder has a concentration of polyethylene oxide from about 1 weight percent to about 60 weight percent. ### Claim 16 (depends on 15) The powder blend of claim 15 wherein polyethylene oxide has an average molecular weight from about 1,000,000 g/mol to about 15,000,000 g/mol. ### Claim 17 (depends on 15) The powder blend of claim 15 wherein polyethylene oxide has an average molecular weight from about 3,000,000 g/mol to about 11,000,000 g/mol. ### Claim 18 (depends on 15) The powder blend of claim 15 wherein the polyethylene oxide has at least about 10 weight percent of the particles having a particle diameter of no more than about 75 microns. ### Claim 19 (depends on 15) The powder blend of claim 15 wherein the polyethylene oxide has at least about 60 weight percent of the particles having a particle diameter of no more than about 75 microns. ### Claim 20 (depends on 15) The powder blend of claim 15 having from about 5 to about 45 weight percent pollyethylene oxide. ### Claim 21 (depends on 15) The powder blend of claim 15 wherein the polyDadmac has an average molecular weight of at least about 100,000 g/mole and an average particle size from about 0.5 microns to about 150 microns. ### Claim 22 (depends on 15) The powder blend of claim 15 wherein the blend is homogeneous.