Patent SG-11201900705P-A (SG)
Title: Multi-stage reverse osmosis system and process for high water recovery from aqueous solutions
Inventor: AHUNBAY MEHMET GOKTUG
IPC: B01D61/58
Filed: 2018-02-21
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 29 August 2019 (29.08.2019) WIPO I PCT I011111111111II111111011101110111I10 III 111 0111 11111 11111 11E111111011 11111011 11011 11 11 (10) International Publication Number WO 2019/164462 Al (51) International Patent Classification: BOlD 61/02 (2006.01) BOlD 61/58 (2006.01) (21) International Application Number: PCT/TR2018/050063 (22) International Filing Date: 21 Febmary 2018 (21.02.2018) (25) Filing Language: English (26) Publication Language: English (71) Applicant: ISTANBUL TEKNIK UNIVERSITESI [TR/TR]; ITU Rektorluk Binasi ITU Ayazaga Kampusu, Maslak, 34469 Istanbul (TR). (72) Inventor: AHUNBAY, Mehmet Goktug; Istanbul Teknik Universitesi Kimya-Metalurji Fakultesi Kimya Muhendis- ligi Bolumu, 34469 Istanbul (TR). (74) Agent: CANKAYA PATENT MARKA VE DANIS- MANLIK LIMITED SIRKETI; Buklum Sokak 5/16, Kavaklidere, 06680 Ankara (TR). (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, 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. (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 (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, 1E, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: MULTI-STAGE REVERSE OSMOSIS SYSTEM AND PROCESS FOR HIGH WATER RECOVERY FROM AQUEOUS = SOLUTIONS Figure 1 71. 71. ON O C (57) : The object of the invention is to provide a system and process that enables product recovery from aqueous solutions containing salts or low molecular weight solutes such as ethanol at high recovery ratio, low osmotic pressure differential (OPD) and low energy consumption compared to current methods. Particular applications of the invention include production of potable water from water sources with high salt content such as sea water, brackish water or wastewater. The system and process related to the present reduced-pressure reverse osmosis (REPRO) invention described here achieves the reduction in the SEC, a reduction in the OPD, and an increase in the potable water recovery via a novel multistage hybrid RO-NF process technology. [Continued on next page] WO 2019/164462 Al IMIONOIMEIMEMOI 111 HINIMEINHIENOMIONIE Published: with international search report (Art. 21(3)) in black and white; the international application as filed contained color or greyscale and is available for download from PATENTSCOPE