WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |

Search International and National Patent Collections
World Intellectual Property Organization
Machine translation
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/135871    International Application No.:    PCT/JP2011/050915
Publication Date: 03.11.2011 International Filing Date: 20.01.2011
C02F 1/62 (2006.01), B01J 38/48 (2006.01), B01J 38/60 (2006.01), B01J 38/64 (2006.01), C01G 49/00 (2006.01)
Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD. [JP/JP]; 16-5, Konan 2-chome, Minato-ku, Tokyo 1088215 (JP) (For All Designated States Except US).
OBAYASHI Yoshiaki [JP/JP]; (JP) (For US Only)
Inventors: OBAYASHI Yoshiaki; (JP)
Agent: MITSUISHI Toshiro; Mitsuishi Law and Patent Office, 9-15, Akasaka 1-chome, Minato-ku, Tokyo 1070052 (JP)
Priority Data:
2010-103001 28.04.2010 JP
(JA) 廃水処理方法
Abstract: front page image
(EN)Disclosed is a wastewater treatment method such that, after iron trichloride is added to wastewater containing arsenic and vanadium so as to make the molar ratio of the iron to arsenic in this wastewater 20 and iron trichloride is added to this wastewater so as to make the molar ratio of iron to vanadium 10 - 80, the pH is adjusted to 5.8 - 8.6, and solid-liquid separation is carried out.
(FR)L'invention concerne une méthode de traitement des eaux usées telle que, après l'ajout de trichlorure de fer aux eaux usées contenant de l'arsenic et du vanadium de sorte que le rapport molaire entre le fer et le vanadium dans ces eaux usées soit de 20 et le rapport molaire entre le fer et le vanadium soit compris entre 10 et 80, le pH est ajusté entre 5,8 et 8,6 et une séparation solide-liquide est réalisée.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, 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.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)