PROBLEM TO BE SOLVED: To solve the problems in which: an operation in consideration with energy conservation cannot be performed since it is constituted of irradiation at all time in which culture solution and a titanium oxide photocatalysis are always irradiated with beam of light including UV light.SOLUTION: A solution sterilization device irradiating a UV sterilization tank 139 with beam of light from an external or internal UV light source 143 to sterilize solution such as raw water and culture solution by titanic oxide includes a flow sensor 138 at a solution supply side of the UV sterilization tank 139 so as to control driving of the UV light source 143 on the basis of the solution supply amount detected by the flow sensor 138.SELECTED DRAWING: Figure 11COPYRIGHT: (C)2017,JPO&INPIT【課題】紫外線を含む光線を培養液と酸化チタン系の光触媒に常時照射するように構成されているため、省エネを考慮した作動が行えないという課題。【解決手段】紫外線殺菌タンク139に外部或いは内部の紫外線光源143から光線を照射して酸化チタンで原水や培養液等の溶液を殺菌する溶液殺菌装置において、紫外線殺菌タンク139の溶液供給側に流量センサ138を設け、該流量センサ138が検出する溶液供給量に基づいて紫外線光源143の駆動を制御したことを特徴とする溶液殺菌装置とする。【選択図】図11
