The invention discloses a low-pressure
catalytic oxidation reactor which comprises a reactor
barrel. A
light reflection flow guide
barrel is arranged in the reactor
barrel, a filler zone is arranged between the
light reflection flow guide barrel and the reactor barrel, a water inlet
pipe and a gas inlet
pipe penetrate the portion, which is positioned on the lower portion of the reactor barrel, ofthe filler zone and are provided with water distributors and aerators, and the water distributors and the aerators are arranged at an opening in the bottom of the
light reflection flow guide barrel. The low-pressure
catalytic oxidation reactor has the advantages that
wastewater and
ozone can be directly fed into the light reflection flow guide barrel, the low-pressure
wastewater can be fed into the light reflection flow guide barrel in a
jet flow manner to be circulated in the light reflection flow guide barrel in a
rotational flow manner, and can be sufficiently fused with the
ozone, a drainpipe is arranged on the upper portion of the reactor barrel, the
wastewater can flow out from the light reflection flow guide barrel, then sufficient reaction can be carried out on the wastewater andthe filler zone, and the wastewater can be ultimately drained from the drain
pipe; the light reflection flow guide barrel is divided into a plurality of longitudinal oxidation zones by
titanium dioxide
catalysis plates, an
ultraviolet lamp pole is arranged in the center of each
oxidation zone, the
catalysis plates are completely positioned in
irradiation distances of
ultraviolet light, the
ultraviolet light can be reflected by the light reflection flow guide barrel, accordingly, illumination can be intensified, and the photocatalytic efficiency can be improved.