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1. (WO2002026640) SIMULTANEOUS AMMONIA AND FLUORIDE TREATMENT FOR WASTEWATER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/026640    International Application No.:    PCT/US2001/030220
Publication Date: 04.04.2002 International Filing Date: 26.09.2001
Chapter 2 Demand Filed:    25.04.2002    
IPC:
C02F 1/28 (2006.01), C02F 1/44 (2006.01), C02F 1/52 (2006.01), C02F 1/66 (2006.01), C02F 1/72 (2006.01), C02F 1/76 (2006.01), C02F 1/78 (2006.01), C02F 9/00 (2006.01)
Applicants: MICROBAR, INC. [US/US]; 1252 Orleans Drive, Sunnyvale, CA 94089-1137 (US)
Inventors: KRULIK, Gerald, A.; (US)
Agent: TEST, Aldo, J.; Flehr Hohbach Test Albritton & Herbert LLP, 4 Embarcadero Center, Suite 3400, San Francisco, CA 94111-4187 (US)
Priority Data:
60/235,992 26.09.2000 US
09/960,640 21.09.2001 US
Title (EN) SIMULTANEOUS AMMONIA AND FLUORIDE TREATMENT FOR WASTEWATER
(FR) TRAITEMENT DES EAUX USEES PAR ELIMINATION SIMULTANEE D'AMMONIAQUE ET DE FLUORURE
Abstract: front page image
(EN)An improved method of treating wastewater to remove ammonia and fluoride is provided. The method comprises the steps of chemical destruction of ammonia with an oxidizing agent (112), followed by treatment with calcium salts (120) to precipitate insoluble calcium fluoride, and filtration to remove the precipitate (124).
(FR)L'invention concerne un procédé amélioré de traitement des eaux usées afin d'en éliminer l'ammoniaque et le fluorure. Ce procédé comporte une étape de destruction chimique de l'ammoniaque au moyen d'un agent oxydant (112), suivie d'une étape de traitement au moyen de sels de calcium (120) pour précipiter le fluorure de calcium insoluble, et d'une étape de filtration pour éliminer le précipité (124).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)