Kitchen fume waste gas purification treatment device

The invention relates to a kitchen fume waste gas purification treatment device. A photocatalysis reaction unit and a dust removal box containing a dust removal liquid are sequentially arranged in a casing in the waste gas flowing direction; the photocatalysis reaction unit comprises a catalyst-supported metal mesh and ultraviolet lamp tubes, a water suction pump and a riser are arranged in the dust removal box, a liquid storage tank containing the dust removal liquid is placed in the dust removal box, the water suction pump continuously sucks the dust removal liquid into the riser, the dust removal liquid flows out of a liquid outlet hole to form a water curtain, and waste gas treated by the photocatalysis reaction unit is subjected to water removal by a water removal unit and then drained after being subjected to dust removal by the water curtain. Aiming to the solve the problem that kitchen fume waste gas is directly discharged into the atmosphere without effective purification treatment, the photocatalysi