Eun-Sik Kim, Yang Liu, and Mohamed Gamal El-Din
Pretreatment, Nanofiltration, Reverse osmosis, Desalination, Oil sands process-affected water
Oil sands process-affected water (OSPW) is largely produced from the oil sands operational process and requires the removal of toxicants for reuse. This research investigated Nanofiltration (NF) and reverse osmosis (RO) pretreatment methods such as coagulation flocculation-sedimentation (CFS), with and without coagulant and coagulant aids. The results show that membrane permeability was enhanced by the addition of coagulant and coagulant aids. Organic and oily constituents in OSPW increased the negative charge and hydrophobicity of the membrane, decreasing membrane performance. The flux recovery ratio was used to measure the effects of physical and chemical washing. This study reveals that the pretreatment improves desalination of OSPW for both NF and RO membranes.
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