Changes in Bacterial Community Structure in Wastewaters in the presence of Saccharomyces Cerevisiae and Benzalkonium Chloride

Abstract

The benefit of bioaugmentation of activated sludge (AS) with yeasts was tested using AS and wastewaters (WW) that originated from the chemical industry, as well as synthetic WW. A stimulating effect of Saccharomyces cerevisiae on microbial respiration intensity in AS was shown. The added yeast biomass maintained viability in AS, an inhibitory effect of BAC on Bacilli was found; however, the addition of yeasts to AS reduced this effect.