Formaldehyde wastewater treatment device

The invention relates to a formaldehyde wastewater treatment device, and relates to the technical field of formaldehyde wastewater treatment, and adopts the technical scheme that the formaldehyde wastewater treatment device mainly comprises a tower body, at least one filler group is arranged in the tower body, a supporting plate for supporting the filler group is arranged in the tower body, and an opening for the filler group to pass through is formed in the tower body; an opening and closing assembly used for opening or closing the opening is arranged at the position, located at the opening, of the tower body, a feeding assembly used for discharging and feeding of the filler set is arranged on the side, opposite to the opening, of the tower body, and a material changing assembly used for replacing the filler set is arranged on the side, located at the opening, of the tower body. The formaldehyde wastewater treatment device has the effect of improving the working efficiency of the formaldehyde wastewater trea