Abstract
Mixing of liquid in a container by gas injection is widely used in many industrial fields. For example, it has been utilized in steelmaking processes, chemical engineering processes and remediation of polluted sediments. We focus on the treatment of contaminated sediments on the bottom of bays and lakes using a swirl motion of a bubbling jet and ozone. In this study, we mention about the behavior of sediment lifted up by swirling bubbling jet generated with a J-shaped lance in a bottomless container. Investigation is carried out on the occurrence condition and basic characteristics of the swirling bubbling jet. The occurrence region is affected by the lifted sediments. The measured values of the basic characteristics can be approximated by empirical equations proposed previously for a bottom blown container without sediments. The period of the swirl motion can be satisfactorily approximated by the period of the rotary sloshing.
