US 12,319,603 B2
Wastewater and sludge treatment device and method
Faina Nakonechny, Ariel (IL); David Gurevich, Ariel (IL); Yaakov Anker, Salit (IL); Alexander Khentov, Nesher (IL); Sergei Chefranov, Haifa (IL); and Helena Tuchinsky, Ariel (IL)
Assigned to Ariel Scientific Innovations Ltd., Ariel (IL)
Appl. No. 18/695,087
Filed by ARIEL SCIENTIFIC INNOVATIONS LTD., Ariel (IL)
PCT Filed Oct. 8, 2022, PCT No. PCT/IB2022/059659
§ 371(c)(1), (2) Date Mar. 25, 2024,
PCT Pub. No. WO2023/058002, PCT Pub. Date Apr. 13, 2023.
Claims priority of provisional application 63/254,132, filed on Oct. 10, 2021.
Prior Publication US 2024/0336509 A1, Oct. 10, 2024
Int. Cl. C02F 1/36 (2023.01); B03C 1/22 (2006.01); B03C 1/28 (2006.01); B03C 1/30 (2006.01); C02F 1/48 (2023.01); C02F 1/52 (2023.01); C02F 1/56 (2023.01); C02F 1/66 (2023.01); C02F 9/00 (2023.01); C02F 11/12 (2019.01); C02F 11/15 (2019.01); C02F 11/121 (2019.01)
CPC C02F 9/00 (2013.01) [B03C 1/22 (2013.01); B03C 1/28 (2013.01); B03C 1/30 (2013.01); B03C 2201/18 (2013.01); C02F 1/36 (2013.01); C02F 1/488 (2013.01); C02F 1/5245 (2013.01); C02F 1/56 (2013.01); C02F 1/66 (2013.01); C02F 11/121 (2013.01); C02F 11/15 (2019.01); C02F 2303/18 (2013.01); C02F 2303/26 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A method of processing water-including waste comprising:
a. providing a fluid waste including at least about 60% water by weight in a reactor;
b. adding to said fluid waste an amount of a ferromagnetic powder;
c. subsequent to b, adding additives to said fluid waste, said additives comprising an amount of anionic flocculant and an amount of cationic flocculant thereby forming ferromagnetic waste particles suspended in water of said fluid waste, said ferromagnetic waste particles comprising solid components of said fluid waste, ferromagnetic particles of said ferromagnetic powder and said flocculants; and
d. subsequent to c, transferring said fluid waste with said ferromagnetic waste particles to a magnetic separator and therein separating said ferromagnetic waste particles from said fluid waste by application of a magnetic field that attracts said ferromagnetic waste particles, thereby yielding a solid ferromagnetic waste material and a liquid wastewater supernatant comprising not more than 3% (w/v) suspended solids,
further comprising:
reducing the average particle size of said ferromagnetic waste particles, during at least one stage selected from the group of stages consisting of:
during c,
subsequent to c but prior to d, and
both during c and subsequent to c but prior to d,
wherein said reducing the average particle size of said ferromagnetic waste particles comprises applying ultrasonic waves having a frequency of not less than 25 kHz to at least a portion of said fluid waste comprising said ferromagnetic waste particles, thereby reducing the average size of said ferromagnetic waste particles.