EP 0743927 A4 19980429 - IMPROVED WASTEWATER TREATMENT PROCESS
Title (en)
IMPROVED WASTEWATER TREATMENT PROCESS
Title (de)
VERBESSERTES VERFAHREN ZUR BEHANDLUNG VON ABWASSER
Title (fr)
PROCEDE AMELIORE POUR LE TRAITEMENT DES EAUX USEES
Publication
Application
Priority
- AU 1127195 A 19941017
- AU 3574899 A 19990618
- OA 60894 A 19960924
- US 9411796 W 19941017
Abstract (en)
[origin: WO9611884A1] In a wastewater treatment process, wastewater passes through an aerobic biological oxidation zone (12) for oxidizing BOD and converting ammonia nitrogen to nitrate. The effluent is passed to an aerobic mixing zone (16) and mixed with effluent from an anaerobic/anoxic zone (20) receiving sludge from a settling zone (24). Alternatively, an anoxic and/or anaerobic zone may be provided between the oxidation zone and aerobic mixing zone for receiving sludge, fermented sludge, or effluent from the anaerobic/anoxic zone for phosphorous removal.
IPC 1-7
IPC 8 full level
C02F 3/04 (2006.01); C02F 3/08 (2006.01); C02F 3/30 (2006.01)
CPC (source: EP)
C02F 3/04 (2013.01); C02F 3/308 (2013.01); C02F 3/082 (2013.01); Y02W 10/10 (2015.05)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9611884A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9611884 A1 19960425; AU 1127195 A 19960506; AU 3574899 A 19990805; AU 703129 B2 19990318; AU 736294 B2 20010726; EP 0743927 A1 19961127; EP 0743927 A4 19980429; OA 10329 A 19970919; RU 2148033 C1 20000427
DOCDB simple family (application)
US 9411796 W 19941017; AU 1127195 A 19941017; AU 3574899 A 19990618; EP 95902392 A 19941017; OA 60894 A 19960924; RU 96121913 A 19941017