Acta Montanistica Slovaca (Sep 2006)
A relation between the temperature of atmosphere and the sludge in the wastewater treatment aeration tank
Abstract
Processes in the aeration tank remove nitrogen from organic substances from wastewater by using bacteria. Nitrification utilizes the metabolism of aerobic bacteria Nitrosomonas, Nitrococus, Nitrospira, Nitrobacter Nitrocystis and Nitrosobolus and the anaerobical bacteria Pseudosomonas, Chromobacterium, Denitrobacillus and Micrococus are denitrifying. The bacteria are litotrophic and they are sensitive to pH of wastewater. Chlorine, heavy metals and cyanide are toxic for bacteria. For a correct growth of reproduction and metabolism, the temperature above 10 ºC is needed but an ideal temerature is from 20 to 30 ºC. An intensive cold reduces or even stop the activity of bacteria but heating of the aeration tank prevents undercooling.
