PROBLEM TO BE SOLVED: To provide an oxygen dissolution promoter, capable of efficiently improving oxygen dissolving degree of the whole rainwater fed to a culture pond or the like.SOLUTION: This promoter includes: a treatment tank a rotary driving source a rotating shaft a diffuser tube an air supply means and an agitation deaeration means. The treatment tank includes: a water supply means and a draining means for maintaining the inside of the tank at a fixed water level and guiding the water in the tank to a promotion pond such as the culture pond or a water tank which is the next step. The rotating shaft is disposed in a vertical shaft-like fashion in the treatment tank, and freely rotated by the rotary driving source. The diffuser tube is fitted around the rotating shaft, freely rotated horizontally together with the rotating shaft in the treatment tank, and also adapted to freely jet micro bubbles on receiving the supply of air from the air supply means. The agitation deaeration means is disposed longitudinally at an outer peripheral position apart from the rotating shaft, freely driven in rotation together with the rotating shaft in the water in the tank, and also adapted to separate and raise the dissolving gas such as nitrogen and carbon dioxide contained in rainwater with the agitation in the interior while taking the rainwater from a water intake port formed on the peripheral surface thereof and dissipate the same upward.COPYRIGHT: (C)2013,JPO&INPIT【課題】 養殖池などに送られる用水全体の酸素溶存度を効率的に高めることができる酸素溶解促進装置を提供すること。【解決手段】 処理槽と回転駆動源と回転軸と散気管と給気手段と攪拌脱気手段とを備え、処理槽は、給水手段と、槽内を一定の水位に保持するとともに槽内用水を次段階である養殖池や水槽などの育成用池に導く排水手段とを備え、回転軸は、処理槽内に縦軸状に配置されて回転駆動源により回転自在とされ、散気管は、回転軸回りに取付けられ同回転軸とともに処理槽内を水平回転自在とされるとともに給気手段からの給気を受けて散気孔から微細気泡を噴出自在とされ、攪拌脱気手段は、回転軸から離れた外周位置に縦向き状に配置されて回転軸とともに槽内用水内で回転駆動自在とされるとともにその周面に形成された水取込口から用水を取り込みながら内部における攪拌作用に伴って用水に含まれる窒素・二酸化炭素などの溶存気体を分離上昇させて上方に放散可能に構成されていることを特徴とする。【選択図】図1
