Patent SG-11201901284V-A (SG)
Title: Method and system for treating ultrapure water
Inventor: ELIOSOV BORIS
IPC: C02F103/04
Filed: 2017-09-15
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 22 March 2018 (22.03.2018) WIP0 I PCT omit VIII °nolo molioliono oimIE (10) International Publication Number WO 2018/053253 Al (51) International Patent Classification: BOlD 61/14 (2006.01) BOlD 61/22 (2006.01) BOlD 61/18 (2006.01) CO2F 103/04 (2006.01) (21) International Application Number: PCT/US2017/051763 (22) International Filing Date: 15 September 2017 (15.09.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/394,788 15 September 2016 (15.09.2016) US 62/435,119 16 December 2016 (16.12.2016) US (71) Applicant: EVOQUA WATER TECHNOLOGIES LLC [US/US]; 210 Sixth Avenue, Suite 3300, Pittsburgh, Penn- sylvania 15086 (US). (72) Inventors: ELIOSOV, Boris; 322 S. Ridge Road, St. Marys, Pennsylvania 15857 (US). SUNDSTROM, Glen P.; 2026 Oxford Street, Rockford, Illinois 61103 (US). COULTER, Bruce L.; 1815 Huffman Blvs., Rockford, Illi- nois 61103 (US). (74) Agent: WILKINS, Frederick C.; 10 Technology Drive, Lowell, Massachusetts 01851 (US). (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, IE, 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: METHOD AND SYSTEM FOR TREATING ULTRAPURE WATER (57) : According to various aspects and embodiments, a system lob and method for polishing ultrapure water (UPW) is disclosed. The water polishing system includes a source of ultrapure water (UPW), an ultrafil- tration (UF) module having an inlet and a permeate outlet, a recirculation conduit communicating the permeate outlet with the inlet and forming a recirculation loop, a recirculation pump disposed along the recirculation conduit upstream from the inlet of the UF module and fluidly coupled to the source of UPW, a supply conduit fluidly coupled to the recirculating 126 conduit and a demand source, the supply conduit positioned downstream from the permeate outlet, and a pressure control valve disposed along the recirculation conduit downstream from the supply conduit and configured to maintain pressure of permeate at a predetermined value. [Continued on next page] W O 20 18/05 3 25 3 Al WO 2018/053253 Al MIDEDIMOMOIDEIREIDINIMMI001110110MOVOIS Declarations under Rule 4.17: as to the identity of the inventor (Rule 4.17(i)) as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))