PROBLEM TO BE SOLVED: To provide a liquid sterilization method capable of performing sufficiently ultraviolet sterilization even in the case of liquid having high absorbance and to provide a liquid sterilization device.SOLUTION: In a liquid sterilization method for sterilizing liquid by irradiating ultraviolet light thereto, the liquid is allowed to flow so as to keep a thin film state and a laminar flow state to form a liquid film, and the liquid film is irradiated with ultraviolet light to thereby perform liquid sterilization, and the thickness of the liquid film is determined based on the absorbance of the liquid.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】吸光度が高い液体であっても充分に紫外線殺菌することができる液体殺菌方法及び液体殺菌装置を提供する。【解決手段】紫外線を液体に照射して殺菌する液体殺菌方法において、液体を薄膜状かつ層流状態を保つように流して液膜を形成し、液膜に紫外線を照射して液体殺菌し、液膜の厚さを前記液体の吸光度に基づいて決定した。【選択図】図2
