Patent SG-11201809936R-A (SG)
Title: Treatment of high peroxide waste streams
Inventor: SASSAMAN FRANK L
IPC: C02F9/00
Filed: 2017-05-25
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1111111111111111111111111111111111111111111111111111111111111111111111111111110111111 Organization International Bureau (10) International Publication Number 0 (43) International Publication Date ......0\" WO 2017/210094 Al 07 December 2017 (07.12.2017) WIP0 I PCT (51) International Patent Classification: (72) Inventors: SASSAMAN, Frank L., Jr.; 341 North Tow- C01B 15/01 (2006.01) CO2F 1/70 (2006.01) er Road, Fombell, Pennsylvania 16123 (US). BERGER, CO2F 1/00 (2006.01) CO2F 1/72 (2006.01) David L.; 178 Vinegar Valley Road, Wampum, Pennsyl- CO2F 1/52 (2006.01) CO2F 9/00 (2006.01) vania 16157 (US). KARRS, Stanley R.; 5000 West Grove CO2F 1/66 (2006.01) Lane, Gibsonia, Pennsylvania 15044 (US). (21) International Application Number: (74) Agent: WILKINS, Frederick C.; 10 Technology Drive, PCT/US2017/034588 Lowell, Massachusetts 01851 (US). (22) International Filing Date: (81) Designated States (unless otherwise indicated, for every 25 May 2017 (25.05.2017) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (25) Filing Language: English CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (26) Publication Language: English DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, (30) Priority Data: KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, 62/344,640 02 June 2016 (02.06.2016) US MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 62/393,701 13 September 2016 (13.09.2016) US PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (71) Applicant: EVOQUA WATER TECHNOLOGIES LLC SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, [US/US]; 210 Sixth Avenue, Suite 330, Pittsburgh, PA TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 15222 (US). = (54) Title: TREATMENT OF HIGH PEROXIDE WASTE STREAMS 100 120 / = = = = = = = = 105 115 = = = = 110 = = = 125 / Nsci-a-ge , Mi e N 130 . , 11 .4 FIG. 1 iv t:T 0 C:::: ) (57) : A method of reducing a concentration of hydrogen peroxide from wastewater includes diluting the wastewater with 1-1 el water having a lower concentration of hydrogen peroxide than the wastewater to produce a diluted wastewater, contacting the diluted ---- wastewater with a dissolved iron compound at an acidic pH to form a partially treated wastewater having a lower concentration of IN , 1 hydrogen peroxide than the diluted wastewater, and precipitating iron solids from the partially treated wastewater by raising a pH of 0 the partially treated wastewater to form a neutralized partially treated wastewater. ei C [Continued on next page] WO 2017/210094 Al MIDEDIMOMOIDEIRMEM001101011101MOHEMMIS (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). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) Published: — with international search report (Art. 21(3))