AIR DIFFUSING STIRRER FOR REACTION TANK

摘要

PURPOSE: To enhance the dissolving efficiency of oxygen into waste water by extending the moving distance of diffused air bubbles up to the surface of the water by rotating an air diffusing means along with the paddle blades arranged to the bottom part of a reaction tank to diffuse air. CONSTITUTION: A tubular rotary hollow shaft 116 is supported on the upper wall 122 provided at the central part of the upper opening of a reaction tank 110 in a rotatable manner by a shaft stand 124 and suspended toward the bottom part of the reaction tank 110. Upper and lower paddle blades 130, 132 are provided to the upper and lower positions of the rotary hollow shaft 116 suspended into the reaction tank 110 and rotated by a motor 120. Air pipes 136 are provided to the lower end opening of the rotary hollow shaft 116 along the lower paddle blades 132 so as to communicate therewith at one ends thereof. Air diffusing pipes 112 branched on both sides in a horizontal direction are provided to the air pipes 136 as air diffusion means and the stirring and aeration of waste water are performed at the same time by air bubbles blown out of air diffusion holes 112a.