FLOATING BODY AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To practice treatment of water-bloom, red tide, oil or the like on the water surface with ease. SOLUTION: A floating body 11 contains a floating matter 13 and a surface ventilation layer 21 disposed at a surface of the floating matter 13. The floating matter 13 is a vitreous sintered material which is produced by adding compounds to sludge and then sintering and has plural cavity parts 17 which are closed so as to shut off inflow of outside air. The surface ventilation layer 21 has plural ventilation holes 23 which are formed by sintering the sludge on a surface of the floating matter 13. The ventilation hole 23 adsorbs bacteria and further passes the outside air therethrough. The surface ventilation layer has thickness of 0.2 mm to 1.0 mm and hole radius size of the ventilation hole is 5μm to 500μm.