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Multicriteria assessment of the phytoremediation at wastewater treatment plant by Macbeth method - case study of Parkandabad, Iran

Today, phytoremediation is used as an effective and low-cost procedure to treat wastewater. Such is a contribution to mitigating the negative impact of climate change. In order to choose phytoremediation as a method of water purification, one of the most important parameters is the economic one. Alongside financial aspect, important criteria while selecting most appropriate method is the effectiveness of each method in wastewater treatment. There is a need for procedure which will take into the account possible variants of the phytoremediation process at the wastewater treatment plant. The present study was performed on the first module of the Parkandabad wastewater treatment plant in Iran. The plant generally receives municipal wastewater. In this study, the changes of biological oxygen demand (BOD5), chemical oxygen demand (COD), total dissolved solids (TDS) and total Kjeldahl nitrogen (TKN) were investigated after using umbrella papyrus (Cyperusalternifolius) and Vetiver grass (Vetiveriazizanioides L.). Macbeth multicriteria method was applied to rank and select the obtained experimental variants with the aim of selecting the best plant species for phytoremediation and optimizing the efficiency in terms of removing BOD5, COD, TDS and TKN.

Phytoremediation ; wastewater ; treatment plant ; Macbeth ; Iran

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