US 12,291,465 B2
Water treatment for removing PFAS
Cliff Alexander DuckWorth, Brisbane (AU); and James Patrick Hunter, Brisbane (AU)
Assigned to The Water & Carbon Group Pty, Ltd., Brisbane (AU)
Filed by The Water & Carbon Group Pty, Ltd., Brisbane (AU)
Filed on Sep. 1, 2023, as Appl. No. 18/241,272.
Application 18/241,272 is a continuation of application No. 17/043,668, granted, now 11,780,746, previously published as PCT/AU2020/050938, filed on Sep. 5, 2020.
Claims priority of application No. 2019903302 (AU), filed on Sep. 6, 2019.
Prior Publication US 2023/0406726 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/24 (2023.01); C02F 3/08 (2023.01); C02F 9/00 (2023.01); C02F 101/36 (2006.01); C02F 101/38 (2006.01); C02F 103/00 (2006.01); C02F 103/06 (2006.01)
CPC C02F 1/24 (2013.01) [C02F 3/08 (2013.01); C02F 9/00 (2013.01); C02F 2101/363 (2013.01); C02F 2101/38 (2013.01); C02F 2101/40 (2013.01); C02F 2103/002 (2013.01); C02F 2103/007 (2013.01); C02F 2103/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A continuous sequential active aeration process for removing PFAS from a contaminated liquid, the process comprising the steps of:
actively aerating the contaminated liquid in a first vessel using a first applied air rate through a diffuser to produce a first liquid stream;
discharging the first liquid stream from the first vessel into a second vessel in fluid communication with the first vessel,
subjecting the first liquid stream to a second process comprising actively aerating the first liquid stream in the second vessel using a second applied air rate through a diffuser to produce a second liquid stream;
subjecting the second liquid stream to a further process thereby generating a third liquid stream;
wherein the first applied air rate is independently controllable relative to the second applied air rate.