Abstract
The Amagasaki Canal, an enclosed waters, have been polluted and eutrophication and hypoxic condition occurred chronically. To restore the aqueous environment of the canal, a water purifying plant was designed and substantiative experiment have been conducted by Amagasaki Sea Blue Project. However, the environmental impact on the sea-bed by the organic load from sessile organisms has been concerned. To reduce the organic load, formation of air layer at the bottom of the structure is regarded as a promising method. In this study, the method was evaluated by the amount of sessile organisms, organic load, and oxygen consumption necessary for the organism resolution. As a result, sessile organisms adhesion was completely inhibited, all the organic load by sessile organisms was reduced, and the oxygen consumption was suppressed.
