US 12,478,226 B2
Method and device for removing a chemical substance from human excreta
Alex Hol, Beuningen (NL)
Assigned to BEAM-IP B.V., Beuningen (NL)
Appl. No. 18/001,916
Filed by BEAM-IP B.V., Beuningen (NL)
PCT Filed Jun. 18, 2021, PCT No. PCT/NL2021/050387
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2021/256933, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 2025874 (NL), filed on Jun. 19, 2020.
Prior Publication US 2023/0233040 A1, Jul. 27, 2023
Int. Cl. A47K 11/02 (2006.01); B01D 35/30 (2006.01); B01D 61/18 (2006.01); B01D 61/20 (2006.01); E03D 11/11 (2006.01)
CPC A47K 11/02 (2013.01) [B01D 35/30 (2013.01); B01D 61/18 (2013.01); B01D 61/20 (2013.01); E03D 11/11 (2013.01); B01D 2201/302 (2013.01); B01D 2313/44 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for removing a chemical substance from human excreta, comprising the following steps of:
providing a toilet for a person from whose excreta the chemical substance must be removed;
releasably connecting a filtering device to the toilet via an inlet which connects the toilet to a receiving chamber of the filtering device, wherein the filtering device comprises at least one removable cartridge with a filter and a plunger wherein the cartridge is placeable adjacently to the receiving chamber, wherein the filtering device further comprises a transport screw that is releasably connectable to the plunger at an outer end thereof by a gripper and wherein the transport screw is movable in a longitudinal direction of the receiving chamber and the cartridge when the cartridge is placed adjacent to the receiving chamber;
transporting, when the cartridge is placed adjacent to the receiving chamber, the excreta from the receiving chamber to the filter in the cartridge by exerting pressure on the excreta by the plunger in the direction from the receiving chamber towards the cartridge, wherein the plunger is connected to the outer end of the transport screw, wherein the transport screw drives the plunger by moving in the longitudinal direction of the receiving chamber and the cartridge, wherein the plunger forms a barrier between the transport screw and the excreta;
filtering the chemical substance out of the excreta in situ using the filter in the cartridge;
periodically replacing the at least one cartridge, wherein the replacing the at least one cartridge comprises covering the cartridge with the plunger, releasing the plunger from the transport screw, and removing the cartridge comprising the filtered chemical substance; and
processing the replaced cartridge.