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1. (WO2018046676) PROCESS FOR IMPROVED SLUDGE DEWATERING
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Pub. No.: WO/2018/046676 International Application No.: PCT/EP2017/072613
Publication Date: 15.03.2018 International Filing Date: 08.09.2017
IPC:
B01D 21/01 (2006.01) ,C02F 1/52 (2006.01) ,C02F 1/56 (2006.01) ,C02F 11/14 (2006.01) ,C02F 11/12 (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
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
11
Treatment of sludge; Devices therefor
12
by de-watering, drying, or thickening
14
with addition of chemical agents
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11
Treatment of sludge; Devices therefor
12
by de-watering, drying, or thickening
Applicants:
KEMIRA OYJ [FI/FI]; Porkkalankatu 3 00180 Helsinki, FI
Inventors:
WU, Suhua; CN
RECKTENWALD, Michael; FI
Agent:
AWA SWEDEN AB; Box 5117 200 71 MALMÖ, SE
Priority Data:
PCT/CN2016/09850609.09.2016CN
Title (EN) PROCESS FOR IMPROVED SLUDGE DEWATERING
(FR) PROCÉDÉ DE D'ÉGOUTTAGE DE BOUE AMÉLIORÉE
Abstract:
(EN) The present invention relates to a process for treatment of undigested or anaerobically digested sludge comprising the steps of providing an inorganic coagulant; adding said inorganic coagulant to the sludge to provide a chemically treated sludge; providing a polymer; providing microparticles; adding the polymer and microparticles to the chemically treated to provide a chemically conditioned sludge; and dewatering the chemically conditioned sludge using a mechanical equipment to obtain a dewatered sludge cake.
(FR) La présente invention concerne un procédé de traitement de boue non digérée ou digérée par voie anaérobie comprenant les étapes consistant à fournir un coagulant inorganique; ajouter ledit coagulant inorganique à la boue pour fournir une boue traitée chimiquement; fournir un polymère; fournir des microparticules; ajouter le polymère et les microparticules a la boue traitée chimiquement pour obtenir une boue conditionnée chimiquement; et égoutter les boues traitées chimiquement à l'aide d'un équipement mécanique pour obtenir un gâteau de boue égouttée.
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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: English (EN)
Filing Language: English (EN)