PROBLEM TO BE SOLVED: To provide a water quality circulating purification and oxygen supply device for an aquaculture pond, which has a high purification rate for aquaculture wastewater, a high oxygen content, realizes recycling of water resources, and reduces water pollution. A drainage device connected to an aquaculture pond via a water pump, a filter connected to the drainage device, and a membrane separation purification mechanism connected to the filter and used for deep purification of wastewater. The membrane separation and purification mechanism is composed of multiple membrane purification modules connected in series, and after being processed by the membrane purification module, the wastewater flows into the circulating water tank, then enters the filter and circulates, and the membrane purification module After being treated in, the purified water is sterilized and disinfected by the UV module, flows into the blast aeration mechanism, and returns to the aquaculture pond. [Selection diagram] Figure 1【課題】養殖廃水に対する浄化率が高く、そして酸素含有量が高く、水資源のリサイクルを実現し、水質汚染を低減させる水産養殖池用の水質循環浄化および酸素供給装置を提供する。【解決手段】水ポンプを介して養殖池に接続された水切り装置と、水切り装置に接続されたフィルターと、フィルターに接続され、かつ廃水の深層浄化に使用される膜分離浄化機構と、を含み、膜分離浄化機構は、直列に接続された複数の膜浄化モジュールで構成され、膜浄化モジュールで処理された後、廃水は循環水タンクに流れ込み、次にフィルターに入って循環し、膜浄化モジュールで処理された後、浄水は紫外線モジュールによって滅菌および消毒され、送風曝気機構に流れ込み、養殖池に戻る。【選択図】図１
