Distribution patterns of microbial community and functional characteristics in full-scale wastewater treatment plants: Focusing on the influent types

Characterization of Microbial Communities in Wastewater Treatment Plants Containing Heavy Metals Located in Chemical Industrial Zones

“…The HMs Cu, Pb, and Fe showed a significant positive correlation with the genera Longilinea and Ferruginibacter but had a significant negative correlation with Micrococcales . The proportion of Saccharimonadales increased significantly in the SM_A, with slightly high Zn, probably due to their strong ability to degrade complex organic matter in the environment of HMs, which is in agreement with prior studies [ 51 , 52 ]. Micrococcales showed significant alterations under high concentrations of Cu and/or Pb [ 53 ].…”

“…Proteobacteria was the dominant genera in terms of anaerobic granular sludge and anaerobic digestion for methane production, whereas Chloroflexi , Actinobacteriota , and Bacteroidota were less abundant in low-carbon sources containing Se and Cd [ 61 ]. In general, the correlation network analysis revealed that the main functional bacteria aggregated together, based on their unique metabolic characteristics, and collaborated to play a remarkable role in wastewater treatment [ 52 ].…”

“…The results at the phylum level differed slightly from those at the genus level because these phyla and genera played different roles in the activated sludge of the different treatment units. In general, the MEN analysis indicated that the main functional microbes in the two WWTPs were clustered based on their distinct metabolic characteristics and played remarkable roles in collaborative pollutant removal [ 52 ].…”

“…The metabolic activities of microorganisms in WWTPs played a crucial role in the overall operational performance of pollutant removal processes [ 52 ]. Bacterial functional prediction based on COG-level functional categories is illustrated in Figure 6 .…”

Bacterial Community Composition and Function in a Tropical Municipal Wastewater Treatment Plant

“…The abundances of putative denitrifying bacteria were higher than nitrifiers in the four AS samples, while the nitrification performance in the Haikou WWTP was excellent. It also found that expression of nitrification-related genes was much lower than that of the denitrification-related genes in an A/O AS system [42]. This may be because most denitrifying bacteria are heterotrophic, leading to faster growth than autotrophic nitrifying bacteria.…”