Fig. 6From: Comparing the performance of Cyperus papyrus and Typha domingensis for the removal of heavy metals, roxithromycin, levofloxacin and pathogenic bacteria from wastewatera 3D response surface plot of interactions of area of wetland and initial E. coli concentration for E. coli reduction. b 3D response surface plot of interactions of flow rate and area of wetland for E. coli reduction. c 3D response surface plot of interactions of flow rate and initial E. coli concentration for E. coli reduction. d 3D response surface plot of interactions of HRT (day) and area of wetland for E. coli reduction. e 3D response surface plot of interactions of HRT (day) and initial E. coli concentration for E. coli reduction. f 3D response surface plot of interactions of HRT (day) and flow rate for E. coli reductionBack to article page