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1. (WO2019007744) WATER TREATMENT PLANT AND CORRESPONDING METHOD
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Pub. No.: WO/2019/007744 International Application No.: PCT/EP2018/066985
Publication Date: 10.01.2019 International Filing Date: 25.06.2018
IPC:
B01D 21/00 (2006.01) ,B01D 21/01 (2006.01) ,B01D 21/08 (2006.01) ,B01D 21/24 (2006.01) ,B03D 3/06 (2006.01) ,C02F 1/52 (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
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
D
SEPARATION
21
Separation of suspended solid particles from liquids by sedimentation
02
Settling tanks
08
provided with flocculating compartments
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
24
Feed or discharge mechanisms for settling tanks
B PERFORMING OPERATIONS; TRANSPORTING
03
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
D
FLOTATION; DIFFERENTIAL SEDIMENTATION
3
Differential sedimentation
06
Flocculation
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
Applicants:
VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT [FR/FR]; L'Aquarène 1 place Montgolfier 94417 SAINT-MAURICE Cedex, FR
Inventors:
GAID, Abdelkader; FR
PAILLARD, Hervé; FR
SAUVIGNET, Philippe; FR
Agent:
LARCHER, Dominique; FR
Priority Data:
175639706.07.2017FR
Title (EN) WATER TREATMENT PLANT AND CORRESPONDING METHOD
(FR) INSTALLATION POUR LE TRAITEMENT DES EAUX ET PROCÉDÉ CORRESPONDANT
Abstract:
(EN) The invention relates to a water treatment plant which comprises means (38) for supplying the water to be treated, means (31) for supplying coagulant reagent (21), a flocculation-decantation device (1) which has means (32) for dispensing the flocculant reagent, means (33) for distributing ballast, means (39d) for extracting decantation sludge and means (9) for discharging water that has been treated, a line (8) for supplying coagulated water to the flocculation-decantation device (1), means (24) for separating the ballast contained in the ballasted sludge followed by means (36) for recycling the ballast back into said flocculation-decantation device (1), characterised in that said device (1) comprises an outer tank (2) that has a first hopper (4), and at least one inner tank (3) that has a second hopper (5) and is arranged inside said outer tank (2); the inner tank (3) receiving the flocculant and the ballast and comprising stirring means (10), wherein a peripheral space is disposed between the inner tank (3) and the outer tank (2); the second hopper (5) having an opening (6) which opens into the first hopper (4); and said first hopper (4) having an outlet that communicates with the means (34) for discharging ballasted sludge, wherein the means (9) for discharging water that has been treated are disposed in the upper portion of said outer tank (2). The invention also relates to a method for implementing a plant of this types.
(FR) Installation pour le traitement des eaux comprenant des moyens d'amenée (38) d'eau à traiter, des moyens d'amenée (31) de réactif coagulant (21), un dispositif de floculation-décantation (1) pourvu de moyens de distribution (32) de réactif floculant, de moyens de distribution (33) de lest, de moyens d'extraction (39d) de boues de décantation et de moyens d'évacuation (9) d'eau traitée, une conduite (8) d'amenée d'eaux coagulées dans le dispositif de floculation-décantation (1), des moyens de séparation du lest contenu dans les boues lestées (24) suivis de moyens de recyclage (36) du lest vers le dispositif de floculation-décantation (1), caractérisée en ce que le dispositif (1) comprend une cuve extérieure (2) pourvue d'une première trémie (4), et au moins une cuve intérieure (3) pourvue d'une deuxième trémie (5) et prévue à l'intérieur de ladite cuve extérieure (2); la cuve intérieure (3) recevant le floculant et le lest et étant pourvue de moyens d'agitation (10), un espace périphérique étant ménagé entre la cuve intérieure (3) et la cuve extérieure (2); la deuxième trémie (5) étant pourvue d'une ouverture (6) débouchant dans la première trémie (4); et la première trémie (4) étant pourvue d'une sortie communicant avec les moyens d'évacuation (34) de boues lestées et les moyens d'évacuation (9) d'eau traitée étant prévus dans la partie haute de ladite cuve extérieure (2). Procédé pour la mise en œuvre d'une telle installation.
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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)