| In order to explore the diversity of microbial community structure in activated sludge of papermaking wastewater and its impact on the treatment effect of papermaking wastewater, the microbial community and diversity composition of activated sludge in two parallel oxidation ditches in the same operation stage under the condition of papermaking wastewater were analyzed by Illumina miseq high-throughput sequencing method. The results showed that the microbial community structure of activated sludge for papermaking wastewater treatment in the system was generally stable under the same wastewater conditions, and the dominant bacteria were Chloroflexi, Bacteroidota, Proteobacteria, Myxococcota, Actinobacteria, Firmicutes etc; The most important dominant bacterial group is Chloroflexi, with proportion abundance of 47.67%-48.22%, much higher than proportion of Chloroflexi in other wastewater. Among them Anaerolineae is its main member, with proportion of 84.39%-88.34%, which can remove targeted pollutants in papermaking wastewater. There are a large number of special functional bacteria in activated sludge samples of papermaking wastewater, which play an important role in the removal of pollutants, especially lignin. |
