Patent ID: 9506190
Filing Date: 2016-11-29
CPC Classification: C02F,D21C,D21F

Claim Text:
1. A method of treating whitewater, comprising: exposing a liquid input stream comprising whitewater or derived from whitewater and containing cations and suspended solids to a flocculent such that agglomerations of flocculent and suspended solids are formed; removing at least a portion of the agglomerations from the liquid input stream to produce a supernatant stream containing a lower quantity of suspended solids than the liquid input stream; filtering the supernatant stream to produce a retentate stream and a filtrate stream containing a lower quantity of suspended solids than the retentate stream; and reducing an amount of total dissolved solids within the filtrate stream by performing reverse osmosis and/or nanofiltration on the filtrate stream.