Photocatalytic floating bed device

The utility model relates to a photocatalytic floating bed device which comprises a reaction tank, a light source, a water inlet valve, a water outlet valve, clapboards, cross bars, photocatalytic short tubes, and photocatalytic films; the reaction tank is a rectangular container with an opening at the upper part; the light source emits light above the reaction tank; the water inlet valve and the water outlet valve are respectively disposed at two sides of the reaction tank bottom; a plurality of clapboards are parallelly arranged in the reaction tank; a plurality of cross bars which are parallel to each other and parallel to the bottom are mounted at the upper end of the reaction tank; the cross bars are sleeved with the photocatalytic short tubes; the photocatalytic short tubes are loaded with photocatalytic films. The utility model can greatly reduce the concentrations of organic pollutants in effluent after sewage treatment, and reduce water environment pollution from the source. The utility model is simp