Effect of Throat Size on Performance of Microbubble Generator and Waste Water Treatment

Abstract

Microbubble can be widely applied to many fields such as waste water treatment from community, industry and agricultural. This study focus on set up experimental apparatus of microbubble generation to examine the optimum ratio between air to water for generating the best microbubble by using three different sizes of venturi with throat diameters of 3mm, 4mm and 5mm, respectively; and also for apply microbubble to treat community waste water. The venturi with throat diameter of 3mm can generate more microbubble than the other. When applied microbubbles to treat the sampling of the waste water, chemical oxygen demand (COD) of waste water was considered.