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Membrane-based separation for oily wastewater: A practical perspective.
Henry J Tanudjaja1, Charifa A Hejase2, Volodymyr V Tarabara2
1School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 37459, Singapore.
Membrane filtration effectively treats industrial oily wastewater, offering a versatile alternative to conventional methods. This review explores its implementation, challenges like fouling, and future monitoring strategies for cleaner environmental discharge.
Area of Science:
- Environmental Engineering
- Chemical Engineering
- Water Treatment Technologies
Background:
- Industrial oily wastewater poses environmental risks and requires effective de-oiling before discharge.
- Conventional treatment methods like dissolved air flotation (DAF) have limitations in handling diverse oily wastewater compositions.
Purpose of the Study:
- To review the practical implementation of membrane filtration for industrial oily wastewater treatment.
- To assess membrane technologies, operational aspects, economics, and challenges.
- To discuss strategies for mitigating membrane fouling and future monitoring techniques.
Main Methods:
- Comprehensive review of existing literature on oily wastewater sources, composition, and regulations.
- Overview of commercially available membranes, modules, and hybrid systems.
- Analysis of membrane fouling mechanisms and control strategies.
Main Results:
- Membrane filtration demonstrates superior performance across a broad range of oily wastewater compositions compared to conventional technologies.
- Economic viability and operational considerations for different membrane systems are discussed.
- Membrane fouling is a significant challenge, requiring effective mitigation techniques.
Conclusions:
- Membrane filtration is a highly effective technology for treating industrial oily wastewater, ensuring high oil removal rates.
- Addressing membrane fouling is crucial for sustained performance and economic feasibility.
- Advancements in monitoring and control are essential for optimizing membrane system operation.
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