EP 0000461 B1 19820505 - PROCESS AND ACTIVE PACKING MATERIAL FOR THE BIOLOGICAL DENITRIFICATION OF WASTE WATER
Title (en)
PROCESS AND ACTIVE PACKING MATERIAL FOR THE BIOLOGICAL DENITRIFICATION OF WASTE WATER
Publication
Application
Priority
FR 7721119 A 19770708
Abstract (en)
[origin: US4209390A] The present invention is directed to a process for biological denitrification of effluents, containing up to 10 g/l of nitric nitrogen, which comprises using an active denitrification support made of selected high performance denitrifying bacteria fixed on a neutral support.
IPC 1-7
IPC 8 full level
C02F 3/28 (2006.01)
CPC (source: EP US)
C02F 3/2806 (2013.01 - EP US); Y10S 210/903 (2013.01 - EP US); Y10S 435/813 (2013.01 - EP US); Y10S 435/874 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB LU NL
DOCDB simple family (publication)
EP 0000461 A1 19790124; EP 0000461 B1 19820505; AU 3780878 A 19800110; AU 520638 B2 19820218; BR 7804409 A 19790228; CA 1118377 A 19820216; DE 2861782 D1 19820624; DK 306278 A 19790109; FR 2396726 A1 19790202; FR 2396726 B1 19820226; IE 47023 B1 19831130; IE 781365 L 19790108; IT 1111478 B 19860113; IT 7868429 A0 19780619; NO 151700 B 19850211; NO 151700 C 19850522; NO 782380 L 19790109; SE 436349 B 19841203; SE 7807648 L 19790109; US 4209390 A 19800624; US 4318988 A 19820309; ZA 783913 B 19790725
DOCDB simple family (application)
EP 78400049 A 19780703; AU 3780878 A 19780706; BR 7804409 A 19780707; CA 306976 A 19780707; DE 2861782 T 19780703; DK 306278 A 19780707; FR 7721119 A 19770708; IE 136578 A 19780707; IT 6842978 A 19780619; NO 782380 A 19780707; SE 7807648 A 19780707; US 10603779 A 19791221; US 92234378 A 19780706; ZA 783913 A 19780707