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1. (WO1998052877) METHOD OF WATER TREATMENT USING ZEOLITE CRYSTALLOID COAGULANTS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/052877 International Application No.: PCT/US1998/009919
Publication Date: 26.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 28.08.1998
IPC:
B01D 21/01 (2006.01) ,B01J 13/00 (2006.01) ,C02F 1/52 (2006.01) ,C02F 1/56 (2006.01) ,C02F 9/00 (2006.01) ,D21H 17/37 (2006.01) ,D21H 17/45 (2006.01) ,D21H 17/68 (2006.01) ,D21H 21/10 (2006.01) ,D21H 23/76 (2006.01)
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
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13
Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
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
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
9
Multistep treatment of water, waste water or sewage
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20
Macromolecular organic compounds
33
Synthetic macromolecular compounds
34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
37
Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20
Macromolecular organic compounds
33
Synthetic macromolecular compounds
34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
41
containing ionic groups
44
cationic
45
Nitrogen-containing groups
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63
Inorganic compounds
67
Water-insoluble compounds, e.g. fillers, pigments
68
siliceous, e.g. clays
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21
Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
06
Paper forming aids
10
Retention agents or drainage improvers
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
23
Processes or apparatus for adding material to the pulp or to the paper
76
characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
Applicants:
NAGAN, Leo, E. [US/US]; US
SORTWELL & CO. [US/US]; 103 Gleneagles St. Simons Island, GA 31522, US (AllExceptUS)
Inventors:
NAGAN, Leo, E.; US
Agent:
ZELLER, James, P.; Marshall, O'Toole, Gerstein, Murray & Borun 6300 Sears Tower 233 S. Wacker Drive Chicago, IL 60606, US
Priority Data:
08/858,24219.05.1997US
09/024,33317.02.1998US
Title (EN) METHOD OF WATER TREATMENT USING ZEOLITE CRYSTALLOID COAGULANTS
(FR) PROCEDE D'EPURATION DE L'EAU UTILISANT DES COAGULANTS CRISTALLOIDES DE ZEOLITE
Abstract:
(EN) A method of coagulating particulates, as in papermaking or water clarification applications, for example, is provided wherein a zeolite crystalloid coagulant is added to water containing the solid matter, a source of multivalent cations, and a cationic acrylamide polymer. The zeolite crystalloid coagulant is preferably prepared by admixing aqueous sodium silicate and sodium aluminate solutions to form a reaction mixture and allowing a reaction to proceed for a sufficient time to form zeolite crystalloid coagulant particles having particle sizes of at least about 4 nm before terminating the reaction.
(FR) L'invention a trait à un procédé permettant de coaguler des particules, comme dans des applications relatives à la fabrication du papier ou à l'épuration de l'eau, par exemple. Selon ce procédé, un coagulant cristalloïde de zéolite est ajouté à l'eau contenant la matière solide, une source de cations multivalents et un polymère d'acrylamide cationique. Le coagulant cristalloïde de zéolite est de préférence préparé grâce au mélange de solutions aqueuses de silicate de sodium et d'aluminate de sodium et ce, dans le but de former un mélange réactionnel et de permettre la poursuite d'une réaction pendant une durée suffisante à la formation des particules d'un coagulant cristalloïde de zéolite dont la taille atteint au moins 4 nm avant la fin de la réaction.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)