Fig. 4: Gene expression of dominant microorganisms in different wastewater and reactor.

The gene expression ratios (cDNA/DNA ratios) of dominant microorganisms at the phylum (a) and class level (b). Notes: SW1: Synthetic wastewater in a flat-plate bioreactor, RW1: Real municipal wastewater in a flat-plate bioreactor, SW2: Synthetic wastewater in an inclined-plate bioreactor, RW2: Real municipal wastewater in an inclined-plate bioreactor.