PROBLEM TO BE SOLVED: To provide a liquid treatment device and a liquid treatment method, even in the case that an organic matter and bacteria are intermingled in a fluid to be treated, capable of efficiently performing the germicidal treatment of the bacteria together with the oxidation decomposition treatment of the organic matter.SOLUTION: Provided is a liquid treatment device 1 comprising: a reaction tank 10 having an emitter 22 ultraviolet-emitted by microwaves； and a microwave generator 12, in which, while emitting the microwaves generated by the microwave generator 12 to the emitter 22, the fluid to be treated including the organic matter and bacteria is circulated through the reaction tank 10, and the germicidal treatment for the bacteria is performed together with the oxidization treatment for the organic matter. In the reaction tank 10, an exterior emitting type through which the fluid to be treated passes at the inside to the emitter 22 is used.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】被処理流体中に有機物と細菌類とが混在する場合でも、有機物の酸化分解処理とともに細菌類の殺菌処理を効率的に行うことができる流体処理装置および流体処理方法を提供する。【解決手段】マイクロウェーブにより紫外線発光する発光体２２を備える反応槽１０と、マイクロウェーブ発生装置１２と、を備え、マイクロウェーブ発生装置１２により発生させたマイクロウェーブを発光体２２に照射しながら、有機物と細菌類とを含む被処理流体を反応槽１０に流通させて、有機物の酸化分解処理とともに細菌類の殺菌処理を行う流体処理装置１であり、反応槽１０において、発光体２２に対して被処理流体が内側を通る外照式が使用されている。【選択図】図１
