US 12,404,196 B2
Systems and methods for removing phosphorus from water
LaVerne Gregorich, Greenwood, WI (US); Jeremy Schiller, Greenwood, WI (US); Simon Larson, Marshfield, WI (US); Shane Wiercinski, Marshfield, WI (US); and John D. Ewing, Marshfield, WI (US)
Assigned to COMPLETE FILTRATION RESOURCES, INC., Marshfield, WI (US)
Filed by COMPLETE FILTRATION RESOURCES, INC, Marshfield, WI (US)
Filed on Nov. 6, 2023, as Appl. No. 18/502,956.
Application 18/502,956 is a continuation of application No. 17/139,638, filed on Dec. 31, 2020, abandoned.
Claims priority of provisional application 63/111,835, filed on Nov. 10, 2020.
Prior Publication US 2024/0140847 A1, May 2, 2024
Int. Cl. C02F 9/00 (2023.01); B01D 61/14 (2006.01); B01D 61/16 (2006.01); B01D 63/06 (2006.01); C02F 1/44 (2023.01); C02F 1/52 (2023.01); C02F 11/127 (2019.01); C02F 101/10 (2006.01)
CPC C02F 9/00 (2013.01) [B01D 61/145 (2013.01); B01D 61/16 (2013.01); B01D 63/069 (2022.08); C02F 1/444 (2013.01); C02F 1/5245 (2013.01); C02F 1/5281 (2013.01); C02F 11/127 (2013.01); B01D 2311/04 (2013.01); B01D 2311/165 (2013.01); B01D 2311/18 (2013.01); B01D 2311/252 (2022.08); B01D 2311/2642 (2013.01); B01D 2311/2649 (2013.01); B01D 2315/10 (2013.01); C02F 2101/105 (2013.01); C02F 2209/06 (2013.01); C02F 2209/40 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving water;
adding a coagulating and flocculating agent to the water to provide a flocculated effluent comprising precipitated phosphorus solids; and
passing the flocculated effluent through an ultrafiltration membrane at sustained flux rates, comprising:
increasing a concentration of recirculating solids within the ultrafiltration membrane to at least approximately 10,000 mg/L total suspended solids; and
separating the precipitated phosphorus solids from the flocculated effluent and to provide a low-phosphorus stream at a first outlet of the ultrafiltration membrane and a high-phosphorus stream at a second outlet of the ultrafiltration membrane.