A Snapshot of the Influent and Effluent Bacterial Populations in a Wastewater Treatment Plant in the North-West Province, South Africa
2023
Stenly Makuwa | Ezekiel Green | Elvis Fosso-Kankeu | Victor Moroaswi | Matsobane Tlou
Wastewater treatment plants receive influent wastewater that is contaminated with bacterial pathogens which may be released into the environment if the plant effluent is inadequately treated. In this study, next-generation sequencing was used to perform a 16S rDNA-based survey of bacterial populations in the influent and effluent from a treatment facility in the North-West Province (SA). In total, 3638 and 3872 effective DNA reads were obtained for the influent and effluent, respectively. Sequence analysis revealed the detection of a diverse bacterial constituency in both the influent and effluent samples. The phyla: Proteobacteria (49.82% and 52.04%), Firmicutes (14.06% and 13.14%) and Actinobacteria (5.00% and 9.99%) were found to be taxonomically abundant in the influent and effluent, respectively. This translated to the detection of biological treatment-, fecal coliform-, and disease-associated bacterial groups that are classified under the following genera: <i>Escherichia</i> spp., <i>Serratia</i> spp., <i>Aeromonas</i> spp., <i>Legionella</i> spp., <i>Pseudomonas</i> spp., <i>Mycobacterium</i> spp., <i>Clostridium</i> spp., <i>Staphylococcus</i> spp. and <i>Streptococcus</i> spp., <i>Comamonas</i> spp., <i>Nitrosomonas</i> spp., <i>Acinetobacter</i> spp., <i>Rhodobacter</i> spp., <i>Paracoccus</i> spp., <i>Hyphomicrobium</i> spp., and <i>Desulfovibrio</i> spp.
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