Ozonation-Assisted Electro-Membrane Hybrid Reactor for Oily Wastewater Treatment

  • Omar M. Khalifa

Student thesis: Master's Thesis

Abstract

The inevitable increase in water consumption due to various reasons such as population growth and industrial evolution has forced to seek sustained supply of water. Treating wastewater effluents from different sources have been researched for long time. With intensifying industrial processes, complex wastewater matrices are produced challenging existing treatment plants. Oil and gas sector is a water-extensive consumer and producer. Oily wastewater coming from drilling activities in the upstream or from petrochemical refineries in the downstream is recalcitrant in nature. Oil exists in stabilized and small-sized emulsions in the bulk water and require advanced treatment methods for its remediation. Advanced technologies such as electrochemical processes, membrane technology, and advanced oxidation processes are all candidates for achieving relatively high removal/abatement of such resilient oil. However, individual technologies usually suffer many drawbacks that limits its practicality. Combinations of technologies can achieve better results by mitigating the drawbacks and propagating the merits. Finding the synergistic effect between hybrids of treatments is a quest for the treatment of oily wastewater. This project investigated the hybridization of electrocoagulation process, ceramic microfiltration membrane, and ozonation into a one-pot solution. The ozonation-assisted electro-membrane reactor has achieved considerable removal of oil as COD. Different interactions were investigated and removal mechanisms were suggested. This work contributes to the field of water treatment in general by setting a methodological approach for treatment hybridization and hunt for the hidden synergy between different elements of the system.
Date of AwardMay 2020
Original languageAmerican English

Keywords

  • Oily Wastewater; Microfiltration; Ceramic Membrane; Electrochemical Cells; Advanced Oxidation Processes (AOPs); Ozonation; Treatment and Removal Mechanisms.

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