A novel superhydrophobic copper mesh (SCM) was developed for efficient oil-water separation. The SCM, with a water contact angle (WCA) of 155.1 ± 1.8° and an oil contact angle (OCA) of 0°, was fabricated via chemical etching. A centrifugal oil-water separation device was designed using this SCM to achieve high-efficiency separation of edible oils. The device demonstrated excellent separation performance, achieving 96.7%, 93.3%, and 98.3% separation efficiencies for sunflower seed oil, corn oil, and peanut oil wastewater, respectively. The separation efficiency remained above 90% after 18 cycles. A model was established to analyze the separation mechanism, showing that the SCM's superhydrophobic and superoleophilic properties enabled effective oil-water separation under centrifugal force. The SCM-based device showed great potential for industrial applications in treating oily wastewater. The study highlights the effectiveness of the SCM in oil-water separation, with stable performance and high efficiency. The device's design and performance provide a basis for optimizing process parameters and equipment design for oil-water separation.A novel superhydrophobic copper mesh (SCM) was developed for efficient oil-water separation. The SCM, with a water contact angle (WCA) of 155.1 ± 1.8° and an oil contact angle (OCA) of 0°, was fabricated via chemical etching. A centrifugal oil-water separation device was designed using this SCM to achieve high-efficiency separation of edible oils. The device demonstrated excellent separation performance, achieving 96.7%, 93.3%, and 98.3% separation efficiencies for sunflower seed oil, corn oil, and peanut oil wastewater, respectively. The separation efficiency remained above 90% after 18 cycles. A model was established to analyze the separation mechanism, showing that the SCM's superhydrophobic and superoleophilic properties enabled effective oil-water separation under centrifugal force. The SCM-based device showed great potential for industrial applications in treating oily wastewater. The study highlights the effectiveness of the SCM in oil-water separation, with stable performance and high efficiency. The device's design and performance provide a basis for optimizing process parameters and equipment design for oil-water separation.