Evaluation of removal efficiency of some chemical parameters of Bu-Ali Industrial Estate wastewater using Phragmites australis in surface flow constructed wetland

Selection of appropriate technologies for wastewater treatment according to climate, economic and social conditions is very important. The use of non-advanced technology with low energy consumption wastewater treatment systems such as a constructed wetland is cost effective and contributes to environmental reclamation. The aim of this study was to determine the efficiency of surface flow constructed wetland in the removal of COD and TSS parameters from Bu-Ali industrial town wastewater.

For the removal of COD and TSS parameters from Bu-Ali industrial town wastewater, three shallow artificial wetlands with retention time of 2 days were made as pilot. The samples were collected using specific containers from the input and output of the reactor and analyzed according to the standard methods. The obtained data were analyzed using the SPSS 18.0 statistical package.

The results showed that the removal efficiencies of COD and TSS were 75% and 80% respectively. Discussion and

Although the removal efficiencies of COD and TSS in the surface flow constructed wetland containing Phragmites australis are acceptable, the treated wastewater is not suitable for irrigation because of the high concentration of organic matter at the wetland output.