Recently, environmental protection has become a very important issue in the world. Many enterprises are recycling as much waste material as possible from their production processes, and they are concerned about energy consumption and environmental issues of production processes.
Generally, biological sewage treatment is widely applied to treating sewage containing a large amount of organic matter including farm sewage and domestic sewage. The most energy-consuming process in these methods is the blowing equipment of the aeration system for supplying dissolved oxygen to sewage. Therefore, improving aeration facilities to increase oxidation efficiency is important to reduce power consumption.
Use of microbubbles in the aeration process of biological sewage treatment has been reported to significantly improve sewage treatment parameters, especially with a significant reduction in energy consumption.
Ji Chol Hyok, a researcher at the Instititute of Nano Science and Technology, investigated the effect of introducing fluidic oscillation into a sewage aerator to enhance oxygen transfer efficiency and generate smaller bubbles.
The experimental results showed that the overall wastewater treatment parameters were improved in microbubble aeration combined with FOs.
You can find more information in his paper “Improving the Efficiency of Biological Sewage Treatment by Applying Porous Membrane Microbubble Generating System Coupled with Fluidic Oscillators” in “Proceedings of KUTIC-2025”.