US 12,459,846 B1
System and process for reducing PFAS and microplastics in biosolids using hydrodynamic cavitation and foam fractionation
Terry Merrell, Kokomo, IN (US)
Assigned to Merrell Bros., Inc., Kokomo, IN (US)
Filed by Merrell Bros., Inc., Kokomo, IN (US)
Filed on Feb. 17, 2025, as Appl. No. 19/055,052.
Application 19/055,052 is a continuation of application No. 18/651,805, filed on May 1, 2024, granted, now 12,291,492.
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 11/12 (2019.01); C02F 11/00 (2006.01); C02F 11/121 (2019.01); C02F 11/122 (2019.01); C02F 11/125 (2019.01); C02F 11/127 (2019.01); C05F 17/10 (2020.01); C05F 17/70 (2020.01); C05F 17/80 (2020.01); C05F 17/95 (2020.01); C05F 17/957 (2020.01); C05F 17/971 (2020.01); C05F 17/993 (2020.01); C02F 101/36 (2006.01)
CPC C02F 11/12 (2013.01) [C02F 11/004 (2013.01); C02F 11/121 (2013.01); C02F 11/122 (2013.01); C02F 11/125 (2013.01); C02F 11/127 (2013.01); C05F 17/10 (2020.01); C05F 17/70 (2020.01); C05F 17/80 (2020.01); C05F 17/95 (2020.01); C05F 17/957 (2020.01); C05F 17/971 (2020.01); C05F 17/993 (2020.01); C02F 2101/36 (2013.01); C02F 2303/26 (2013.01); C02F 2305/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for reducing particles from biosolids, comprising:
providing a storage tank for holding biosolids and an inlet pipe, delivering biosolids from the storage tank through the inlet pipe first to a screener and second to a percent solids meter operably connected to the inlet pipe, wherein the percent solids meter measures the solid content in the biosolids and sends a signal to an electronic solenoid valve that selectively adds water to the biosolids, operably connecting a chlorine generator to the percent solids meter and conveying the biosolids to the chlorine generator from the percent solids meter, providing a first venturi hydrodynamic cavitation chamber operably connected to the chlorine generator to receive the biosolids from the chlorine generator, wherein the first venturi hydrodynamic cavitation chamber creates vacuum bubbles in the biosolids, and
operably connecting a mechanical hydrodynamic cavitation device to the first venturi hydrodynamic cavitation chamber and conveying the biosolids from the mechanical hydrodynamic cavitation device to the mechanical hydrodynamic cavitation device, wherein the first venturi hydrodynamic cavitation chamber creates vacuum bubbles in the biosolids.