ABSTRACT
Constructed wetlands (CWs) were often built for municipal wastewater treatment. However, there have been few reports on the refractory organics industrial wastewater treatment, such as nitrobenzene (NB) wastewater. In this paper, four laboratory-scale CWs (CW only, CWs planted with Echinodorus amazonicus (EA), Calamus, and Water hyacinth were set up to treat artificial NB wastewater in this study. An inflow NB load was between 10.00 and 30.00mg/L. The results showed that higher NB degradation efficiency was got in CWs with plant groups. The highest NB removal reached 92.8% in CW planted with EA. This investigation indicated that the potential application of CWs for NB wastewater treatment and a proper choice of plants can further increase NB removal efficiency.
