Particle suspensions of flocculating polymer powders and powder flocculant polymer blends
AssigneePsmg, LLC
InventorJason Holt
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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.
Claims22
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.
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.
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.
Dependencies are inferred from the claim text.