抄録
Contamination of semiclosed water areas is one of serious problems in the world. A novel agitation method is proposed for the treatment of contaminated sediment on the bottoms of bays and lakes using a swirl motion of a bubbling jet and ozonation. In this study, we focus on the lifting of small particles initially placed on the bottom of a cylindrical bath up into the bath by a swirl motion of a bubbling jet generated with a J-shaped lance. Investigation is carried out on the occurrence condition and the basic characteristics of the swirling bubbling jet.
