Distribution of tetracycline resistance genes and AmpC β-lactamase genes in representative non-urban sewage plants and correlations with treatment processes and heavy metals
A/O was suitable process for ARGs removal. Process of sedimentation made more contribution to ARGs elimination than disinfection. ARGs relative abundances were significant positive related to metals concentrations. Excess sludge poses more potential risks than effluent for higher residual of ARGs.