Patent SG-11201808420P-A (SG)
Title: Method for separation of magnesium and calcium ions from saline water, for improving the quality of soft and desalinated waters
Inventor: LAHAV ORI
IPC: C02F9/02
Filed: 2017-03-30
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 1111111101111011101010111110101111101110111101111101111101111101111101111011111 International Bureau 0.. .1 j ..... ..,,/ (10) International Publication Number (43) International Publication Date WO 2017/168425 Al 5 October 2017 (05.10.2017) IN I PO I P CT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, CO2F 1/68 (2006.01) CO2F 103/08 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, CO2F 1/44 (2006.01) BOlD 61/58 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, CO2F 9/02 (2006.01) HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (21) International Application Number: MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, PCT/IL2017/050392 NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, (22) International Filing Date: RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 30 March 2017 (30.03.2017) TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every (26) Publication Language: English kind of regional protection available): ARIPO (BW, GH, (30) Priority Data: GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, 244854 31 March 2016 (31.03.2016) IL TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) Applicant: TECHNION RESEARCH & DEVELOP- DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, MENT FOUNDATION LIMITED [IL/IL]; Senate Build- LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, ing, Technion City, 3200004 Haifa (IL). SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, (72) Inventors: LAHAV, Ori; 49 Hagalil St., 3657000 Givat GW, KM, ML, MR, NE, SN, TD, TG). Ela (IL). BIRNHACK, Liat; 13 Avshalom St., 3340341 Declarations under Rule 4.17: Haifa (IL). NATIV, Paz; 45/4 Shimshon St., 3467814 of inventorship (Rule 4.17(N)) Haifa (IL). NIR, Oded; Kibbutz Gadot, 1232500 D.N. Up- per Galilee (IL). Published: (81) Designated States (unless otherwise indicated, for every — with international search report (Art. 21(3)) kind of national protection available): AE, AG, AL, AM, (54) Title: METHOD FOR SEPARATION ING THE QUALITY OF SOFT AND DESALINATED 32 —, 30 --, De-carbonated / \T OF A 34 MAGNESIUM AND WATERS -- -, Permeate-back to Recycled permeate DlaNF _. t.t : 46 desalinati o n CALCIUM IONS FROM SALINE WATER, FOR IMPROV- B 1_, plant . Recycled permeate 4° ,„ -4) -s SWRO Dia _ SW or SWRO brine Permeate 'pern '''. eate A. l 50 j OF 5 Il 42) -• ' NF-Brine Mg-rich j 38 38 44-) solution , 36 2 .2 11 in 48 N 71' GO 1-1 Figure 2 IN 11 0 (57) : A Nanofiltration-DiaNanofiltration (NF-DiaNF) system and method for extracting divalent ions from saline water \" (e.g., seawater) to produce solutions rich in divalent ions (in particular Mg', Ca' and 50 4 2- ), while minimizing the concentrations of C undesirable species (e.g., Cl - , Br, B and Nam). The solutions may be added to water (e.g., desalinated, soft, drinking or irrigation wa- ter) to enrich the water with divalent ions, thereby improving its quality.