Abstract
This study focused on the characteristics of water clarification by microscopic bubble. The two parameters which influence the particle size of bubbles, i.e. fluid flow and water temperatures, were investigated toward the depolution of water in hydrosphere environment. Measurements of bubble size were carried out with changing fluid flow at generator and water temperatures. After the generation of bubbles, the particle size and the number of bubbles were measured from 15 to 80 seconds. From the result, the effect of fluid flow on the particle size seemed to be small. On the other hand, at a constant flow, the higher the water temperature was, the smaller the particle sizes of bubble were. The size also became to be small in the course of time
