Behaviour of physicochemical and microbiological characteristics of vertical flow constructed wetland substrate after treating a mixture of urban and olive mill wastewaters

The aim of the current work is to evaluate effect a mixture olive mill wastewater (OMWW) and urban (UW) on constructed wetland (CW) substrate physicochemical parameters, study abundance behaviour microbial community at different depths. In this regard, samples were investigated three depth levels (0–10 cm, 10–20 cm 20–30 cm) inside pilot scale CW treating mixture. order compare obtained results with conventional case, control (CW plant only UW) was implemented. Result shows that an increase in electrical conductivity (from 0.134 0.222 mS/cm 0–10 from 0.131 0.283 cm), total dissolved salts 65.45 108.67 mg/kg 0–10cm 64.33 135.3 organic carbon 0.86 6.84%), nitrogen 0.1 0.45, 0.43 0.41 mg/kg, respectively) C/N ratio take place after treatment As for microbiological yeast fungi which may optimize biodegradation compounds such as polyphenols are non-easily degraded.