Fig. 6: Comparison of the ARG composition and microbial community during wastewater treatment processes by principal component analysis (PCA).

a ARG composition in influent wastewater, activated sludge, and treated effluent at various WWTPs with different process configurations. b ARG composition in each treatment stage of CAS and MBR processes at WWTP B. c 16S-based microbial community in influent wastewater, activated sludge, and treated effluent at various WWTPs with different process configurations. d 16S-based microbial community in each treatment stage of CAS and MBR processes at WWTP B.