US 11,746,027 B2
Method for treating aqueous effluent
Cédrick Favero, Andrezieux Boutheon (FR); Morgan Tizzotti, Andrezieux Boutheon (FR); Frédéric Daguerre, Andrezieux Boutheon (FR); and Marc-Edouard Michel, Andrezieux Boutheon (FR)
Assigned to S.P.C.M. SA, Andrezieux-Boutheon (FR)
Filed by S.P.C.M. SA, Andrezieux-Boutheon (FR)
Filed on Feb. 25, 2021, as Appl. No. 17/185,483.
Claims priority of application No. 20 01955 (FR), filed on Feb. 27, 2020.
Prior Publication US 2021/0269332 A1, Sep. 2, 2021
Int. Cl. C02F 1/56 (2023.01); C02F 1/52 (2023.01); C02F 1/54 (2023.01); C08L 33/02 (2006.01); C08L 33/26 (2006.01); C10G 1/04 (2006.01); C02F 103/10 (2006.01); B01D 21/01 (2006.01); C07C 31/13 (2006.01); C07C 43/02 (2006.01)
CPC C02F 1/56 (2013.01) [C02F 1/5272 (2013.01); C02F 1/547 (2013.01); C08L 33/02 (2013.01); C08L 33/26 (2013.01); C10G 1/045 (2013.01); B01D 21/01 (2013.01); C02F 2103/10 (2013.01); C02F 2305/04 (2013.01); C07C 31/13 (2013.01); C07C 43/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A flocculation formulation comprising:
from 80 to 99.98 weight percent of at least one flocculating agent, said agent being a copolymer prepared from at least one nonionic monomer and at least one anionic monomer, said copolymer being in powder form;
from 0.01 to 10 weight percent of at least one surfactant, wherein said surfactant is a fatty acid ester;
from 0.01 to 10 weight percent of at least one additional compound having formula (I):

OG Complex Work Unit Chemistry
where:
R1 is a hydrogen atom or a saturated or unsaturated, linear, branched, aromatic or cyclic carbon radical having X carbon atoms of between 3 and 20; wherein said carbon radicals are radical chains comprising only carbon atoms and hydrogen atoms
R2 is a saturated or unsaturated, linear, branched, aromatic or cyclic carbon radical having Y carbon atoms of between 3 and 20; and
X+Y=6 to 30 carbon atoms.