Efficient wastewater treatment methods for petrochemical industrials producing Poly Ethylene Terephthalate (PET) - A review
Findings the efficient method for removing of terephthalate compounds from industrial wastewaters is considered a big challenge in the world. In this study, an efficient Iranian and worldwide methods to remove terephthalate compounds from petrochemical industrial wastewaters were investigated. In this regard, no studies with Persian languages were found. To review the studies conducted in the rest of the world, articles were searched with Google engine in databases including springer; science direct; online library Wiley; iwap online and.... 40 articles were included in this study. These articles were categorized and ranked based on the type of contaminant and the selected removal methods. The studies were ranked as fallow; 1: COD removal efficiency industrial wastewater including PTA (41%), 2: removal of soluble materials (14%), 3: removal of suspended solids (11%), 4: removal of heavy metal (9%) and investigation the type of bacterial colonies in the treatment plants (7%). These study showed that the anaerobic process has a good efficiency to treat this type of wastewater, so, has been mostly studied to remove organic matter and a satisfactory result has been obtained in this field. For industrial wastewaters containing terephthalate compounds, the neutralization, initial sedimentation, anaerobic and aerobic processes can be used as a reliable process to treat this type of wastewater.
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