of microorganisms and bacteria, as a rule, having quite high "age" [10, 11, 16, 19, 20], capable to continue an
aerobic mineralization with the lowered rate of decay of organic part of activated sludge. According to these
researches the duration of an aerobic mineralization of 11 days was accepted. Daily mineralizer was loaded with
2 dm
3
source activated sludge sampled from the production of the secondary clarifier. Previously having separated
2 dm
3
of sludge water on floatation installation, and the separated deposit came back to a mineralizer.