Microbial Communities and Nitrogen-Utilizing Bacteria of Rotating Biological Contactors and Activated Sludge Treating Public Sewage and Night Soil/Johkasou Sludge

The public sewage (PS) and night soil mixed with johkasou sludge (JO) have similar chemical compositions; however, the concentrations of organic matter nitrogen compounds were different. We investigated microbial community rotating biological contactor (RBC) units treating PS JO, in which RBC was submerged liquor activated sludge. Here, we observed that compositions at phylum class levels between PS-RBC JO-RBC, whereas relative abundances several phyla (Euryarchaeota, Acidobacteria, Chloroflexi, Firmicutes, Patescibacteria, Betaproteobacteria) significantly differed them. composition (an attached growth process) to (a suspended process). likely affected RBC. abundance total denitrifying bacteria twice as much while nitrifying bacterial phylotypes had a abundance. predominant genera different well cross-sectional layers PS-RBC, suggesting functional diversity inhabiting