Microbial Communities and Sulfate-Reducing Microorganisms Abundance, Diversity and functional activity in Municipal Anaerobic Sewage Sludge Digesters from a Wastewater Treatment Plants. Sewage Sludge

Here we describe the microbial community composition, structure, and abundance of sulfate-reducing bacteria (SRB) in the relationship of sulfate-reducing rate, concentration, and mass flow of TSS/VSS, sulfate, sulfur (solid), and Fe (solid) in four anaerobic sludge samples of Dalseochon - industrial and Seobu wastewater treatment plants (WWTPs). The Dalseochon-industrial sludge samples, which served as an experiment, received effluent from Daegu Dyeing Industrial Center that contains a significant amount of sulphate and were compared with Seobu WWTPs as a control system. There were three samples of primary, activated secondary, and anaerobically digested sludge collected from Dalseochon-industrial and WWTP and one sample of anaerobically digested sludge from Seobu WWTP. Microbial communities of anaerobic sludge samples were studied using amplification and Illumina sequencing of 16S rRNA and dissimilatory sulfite reductase beta subunit (dsrB) gene fragments. The outcomes demonstrated that similar dynamic conditions between the two sampling stations may have contributed to the same community structure of microbes and SRMs in the Dalseochon-industrial WWTP primary sludge (Ind-3) and Seobu WWTP anaerobically digested sludge samples (Ind-4) revealed by UPGMA clustering analysis.