EP 1618073 A1 20060125 - METHOD FOR PURIFYING COKE WASTE WATER USING A GAS-PERMEABLE MEMBRANE
Title (en)
METHOD FOR PURIFYING COKE WASTE WATER USING A GAS-PERMEABLE MEMBRANE
Title (de)
VERFAHREN ZUR REINIGUNG VON KOKEREIABWASSER MIT GASDURCHLÄSSIGER MEMBRAN
Title (fr)
PROCEDE POUR L'EPURATION D'EAUX USEES DE COKERIE A L'AIDE D'UNE MEMBRANE PERMEABLE AUX GAZ
Publication
Application
Priority
- EP 2004003353 W 20040330
- DE 10318736 A 20030425
Abstract (en)
[origin: CA2523360A1] The invention relates to a method for purifying coke waste water that is charged with nitrogen compounds, cyanides and sulfides. According to the inventive method, the coke waste water passes through a reactor (3) that is integrated into a liquid cycle (2) and that comprises at least one gas-permeable membrane tube (5) whose interior is impinged upon by an oxygenous pressurized gas (4). On the exterior of the membrane tube (5) which is immersed in the liquid, a biofilm (6) is maintained in whose inner region (7) rich in oxygen due to the gas-permeability of the membrane tube (5) nitrogenous compounds are selectively nitrified to nitrates while at the same time nitrates are denitrified to elemental nitrogen in an oxygen-poor outer region (8) of the biofilm (6).
IPC 1-7
IPC 8 full level
B01F 3/04 (2006.01); C02F 3/10 (2006.01); C02F 3/20 (2006.01); C02F 3/28 (2006.01); C02F 3/30 (2006.01)
CPC (source: EP KR US)
B01F 23/23124 (2022.01 - EP US); B01F 23/231244 (2022.01 - EP); B01F 23/231265 (2022.01 - EP); B01F 23/237612 (2022.01 - EP); B01F 23/29 (2022.01 - EP US); C02F 3/102 (2013.01 - EP US); C02F 3/208 (2013.01 - EP US); C02F 3/2806 (2013.01 - EP US); C02F 3/30 (2013.01 - KR); B01F 23/231244 (2022.01 - US); B01F 23/231265 (2022.01 - US); B01F 23/237612 (2022.01 - US); C02F 3/302 (2013.01 - EP US); C02F 2101/10 (2013.01 - EP US); C02F 2101/16 (2013.01 - EP US); C02F 2101/163 (2013.01 - EP US); C02F 2101/18 (2013.01 - EP US); C02F 2209/003 (2013.01 - EP US); C02F 2209/03 (2013.01 - EP US); C02F 2209/22 (2013.01 - EP US); C02F 2209/40 (2013.01 - EP US); Y02W 10/10 (2015.05 - EP US)
Citation (search report)
See references of WO 2004096719A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 10318736 A1 20041111; AR 044047 A1 20050824; BR PI0409732 A 20060509; CA 2523360 A1 20041111; CN 100355673 C 20071219; CN 1802322 A 20060712; EP 1618073 A1 20060125; JP 2006524562 A 20061102; KR 20060014037 A 20060214; MX PA05011489 A 20051215; NO 20054903 D0 20051024; NO 20054903 L 20051125; PL 378165 A1 20060306; RU 2005136658 A 20060320; TW 200505804 A 20050216; US 2007012619 A1 20070118; WO 2004096719 A1 20041111; ZA 200508611 B 20080130
DOCDB simple family (application)
DE 10318736 A 20030425; AR P040101351 A 20040421; BR PI0409732 A 20040330; CA 2523360 A 20040330; CN 200480011072 A 20040330; EP 04724283 A 20040330; EP 2004003353 W 20040330; JP 2006504917 A 20040330; KR 20057020311 A 20051025; MX PA05011489 A 20040330; NO 20054903 A 20051024; PL 37816504 A 20040330; RU 2005136658 A 20040330; TW 93111462 A 20040423; US 55425605 A 20051214; ZA 200508611 A 20040330