PROGRESS FOR THE BIOLOGICAL DENITRIFICATION OF AMMONIUM CONTAINING WASTEWATER

摘要

The invention is directed to a process for biological denitrification of waste water, comprising a nitrifying reactor and a denitrifying reactor, wherein an ammonium ion containing waste water stream is partly fed to the denitrifying reactor and partly to the nitrifying reactor, in which process the ammonium ion is biologically nitrified in the nitrifying reactor to nitrate, which nitrified waste water flow is subsequently fed to the denitrifying reactor. In the denitrifying reactor nitrate is denitrified through nitrite into di-nitrogen (N2) gas by a consortium of bacteria which are oxidising concomitantly COD and ammonium.