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1. (WO2018046687) AQUEOUS EFFLUENT TREATMENT PROCESS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/046687 International Application No.: PCT/EP2017/072628
Publication Date: 15.03.2018 International Filing Date: 08.09.2017
IPC:
C02F 1/52 (2006.01) ,B01D 21/01 (2006.01) ,C02F 1/56 (2006.01) ,C02F 103/10 (2006.01)
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
52
by flocculation or precipitation of suspended impurities
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
21
Separation of suspended solid particles from liquids by sedimentation
01
using flocculating agents
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
52
by flocculation or precipitation of suspended impurities
54
using organic material
56
Macromolecular compounds
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
103
Nature of the water, waste water, sewage or sludge to be treated
10
from quarries or from mining activities
Applicants:
S.P.C.M. SA [FR/FR]; ZAC de Milieux 42160 Andrézieux-Bouthéon, FR (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW)
SNF (CHINA) FLOCCULANT CO., LTD. [CN/CN]; No. 6 North Binjiang Road Taixing Economic Development Zone 225400 Taxing City, CN (CN)
Inventors:
FAVERO, Cédrick; FR
TIZZOTI, Morgan; FR
Agent:
VEINANTE, Aude; FR
COLOMBET, Alain; FR
GROSBOIS, Mathilde; FR
MYON, Gérard; FR
GRAND, Guillaume; FR
Priority Data:
165842509.09.2016FR
Title (EN) AQUEOUS EFFLUENT TREATMENT PROCESS
(FR) PROCEDE DE TRAITEMENT D'EFFLUENTS AQUEUX
Abstract:
(EN) The invention relates to the treatment of mine tailings in the form of aqueous effluents comprising solid particles. The process of the invention makes it possible to separate all or part of the water from an aqueous effluent comprising solid particles. This process comprises (a) the addition to the effluent of at least one anionic modified natural polymer chosen from anionic guar gums and/or anionic starches, then (b) the addition of at least one cationic modified natural polymer chosen from cationic starches and/or cationic dextrans and/or cationic chitosans. The invention also relates to a composition comprising an aqueous effluent comprising solid particles treated by an anionic modified natural polymer and a cationic modified natural polymer. Preferably, it relates to a composition comprising an aqueous effluent comprising solid particles, at least one anionic modified natural polymer chosen from anionic guar gums and/or anionic starches, and at least one cationic modified natural polymer chosen from cationic starches and/or cationic dextrans and/or cationic chitosans.
(FR) L'invention concerne le traitement de résidus miniers sous la forme d'effluents aqueux comprenant des particules solides. Le procédé de l'invention permet de séparer tout ou partie de l'eau d'un effluent aqueux comprenant des particules solides. Ce procédé comprend (a) l'addition dans l'effluent d'au moins un polymère naturel modifié anionique choisi parmi les gommes de guar anioniques et/ou les amidons anioniques, puis (b) l'addition d'au moins un polymère naturel modifié cationique choisi parmi les amidons cationiques et/ou les dextrans cationiques et/ou les chitosans cationiques. L'invention concerne également une composition comprenant un effluent aqueux comprenant des particules solides traitées par un polymère naturel modifié anionique et un polymère naturel modifié cationique. De préférence, elle concerne une composition comprenant un effluent aqueux comprenant des particules solides, d'au moins un polymère naturel modifié anionique choisi parmi les gommes de guar anioniques et/ou les amidons anioniques, et au moins un polymère naturel modifié cationique choisi parmi les amidons cationiques et/ou les dextrans cationiques et/ou les chitosans cationiques.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)