US 12,076,767 B2
Solid waste treatment system and method
Colin Morrell, Enfield (CA)
Assigned to GFL Environmental Services Inc., Vaughan (CA)
Filed by GFL EVIRONMENTAL SERVICES INC., Vaughan (CA)
Filed on Aug. 8, 2022, as Appl. No. 17/883,455.
Application 17/883,455 is a continuation of application No. 16/723,250, filed on Dec. 20, 2019, granted, now 11,541,438.
Application 16/723,250 is a continuation in part of application No. PCT/AU2018/050620, filed on Jun. 22, 2018.
Claims priority of application No. 2017902433 (AU), filed on Jun. 23, 2017.
Prior Publication US 2022/0371064 A1, Nov. 24, 2022
Int. Cl. B09B 3/80 (2022.01); B01D 11/02 (2006.01); B03B 7/00 (2006.01); B03B 9/06 (2006.01); B09C 1/08 (2006.01); C02F 1/00 (2023.01); C02F 1/44 (2023.01); C02F 11/12 (2019.01); C02F 11/122 (2019.01)
CPC B09B 3/80 (2022.01) [B01D 11/028 (2013.01); B01D 11/0292 (2013.01); B03B 7/00 (2013.01); B03B 9/06 (2013.01); B09C 1/08 (2013.01); C02F 1/004 (2013.01); C02F 1/441 (2013.01); C02F 11/122 (2013.01); C02F 2303/16 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A waste removal system for removing per-fluoroalkyl and poly-fluoroalkyl substances (PFAS) from bulk solid waste, the system comprising:
a preparation module having a bulk material separator to separate oversize material from the bulk solid waste;
a physical separation module, located down-stream of the preparation module, to separate the bulk solid waste based on particle size one or more separation techniques selected from physical, hydrodynamic, and density separation techniques;
an extraction module, located downstream of the physical separation module, to add leachate and/or extractant to separate contaminants including the PFAS from a slurry output from the physical separation module, into a fines output and a contaminated water solution including the contaminants; and
a water circulation system for supplying supply water to the preparation module, the physical separation module and the extraction module, the water circulation system including at least one water treatment system, the at least one water treatment system including a slurry dewaterer for producing dewatered fines cakes having a portion of the PFAS and a granulated activated carbon (GAC) filter for removing a remainder of the PFAS from dewaterer-expelled water, treated water from the at least one water treatment system being recycled and recirculated within the waste removal system as a portion of the supply water.