Quantification of the bacterial pathogens in municipal wastewater treatment plants

摘要

In this study, we examined two municipal wastewater treatment systems, CAS and DHS. Colilert method and qPCR wereutilized to monitor the removal of pathogenic species in the treatment systems. General E. coli, Clostridium perfringensand EHEC were detected and quantified in samples from two treatment systems. The results show a high level of E. coliconcentrations in the raw water. Results showed that specific removal rates vary widely regardless of the system employed.There was no significant difference in the removal of E. coli by CAS and DHS processes. Data on pathogen detection intreated effluents confirmed the potential for environmental contamination by bacteria and could be useful to establishstandards for policies on wastewater management.