Patent SG-11201811449V-A (SG)
Title: Cleaning method of a water-filtration system under operation
Inventor: ANFRAY JÉRÔME
IPC: B01D61/04
Filed: 2016-07-01
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property MD 1101111 0 DOI HIM 011101 0 01111111111111111111111110111111011110111111 Organization International Bureau (10) International Publication Number (43) International Publication Date ......0\"\" WO 2018/002685 Al 04 January 2018 (04.01.2018) W I PO I PCT (51) International Patent Classification: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, BOlD 61/04 (2006.01) BOlD 65/02 (2006.01) KM, ML, MR, NE, SN, TD, TG). BOlD 61/16 (2006.01) BOlD 65/08 (2006.01) (21) International Application Number: Published: PCT/IB2016/001157 — with international search report (Art. 21(3)) (22) International Filing Date: 01 July 2016 (01.07.2016) (25) Filing Language: English (26) Publication Language: English (71) Applicants: TOTAL SA [FR/FR]; 2 place Jean Millier La Defense 6, 92400 Courbevoie (FR). VEOLIA WA- TER SOLUTIONS & TECHNOLOGIES SUPPORT [FR/FR]; Immeuble l'Aquarene, 1 Place Mongolfier, 94417 Saint Maurice Cedex (FR). SAIPEM S.A. [FR/FR]; 1/7 av- enue San Fernando, 78180 Montigny Le Bretonneux (FR). (72) Inventors: ANFRAY, Jerome; 5 Avenue des Sayettes, 64000 Pau (FR). PEDENAUD, Pierre; 4 Chemin de Fer- _ re, 64230 Lescar (FR). SKIVINGTON, Graeme; 8 Moor- foot — Avenue, Glasgow, G46 7BY (GB). DELAPLACE, = Thomas; 1, Cite Nouvelle, 92110 Clichy (FR). = (74) Agent: ROCABOY, Nadine; Cabinet Plasseraud, 66, rue _ de la Chaussee d'Antin, 75440 Paris Cedex 09 (FR). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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, DK, DM, DO, DZ, _= EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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. = (84) Designated States (unless otherwise indicated, for every = kind of regional protection available): ARIPO (BW, GH, = GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, = — UG, ZM, ZW), Eurasian AZ, BY, KG, KZ, RU, TJ, (AM, = TM), European (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, 1-1 ..! (54) Title: CLEANING METHOD OF A WATER-FILTRATION SYSTEM UNDER OPERATION G i n (57) : The present invention concerns a method for cleaning a filtration system under operation, said filtration system corn- prising: a hydraulic circuit Cp recycling the permeate stream to the feed side of said membrane and/or a hydraulic circuit Cr recycling ei the retentate stream to the feed side of said membrane, said method comprising: 1) injecting an amount of a chemical product into the C:::: ) filtration system which is under operation in said hydraulic circuit Cp or in said a hydraulic circuit Cr or upstream of said cross-flow 0 --.... filtration membrane, 2) setting the proportion of recycled permeate stream or recycled retentate stream collected in the hydraulic circuit X ) Cp and/or Cr to enable the recycling of a significant amount of unreacted chemical product having passed through said cross-flow C filtration membrane to the feed side of said cross-flow filtration membrane, as well as a filtration system for carrying out said method. ei C