Small-scale test device for ozone catalysis system

The invention discloses a small-scale test device for an ozone catalysis system, which comprises a catalysis unit, liquid transmission units and gas treatment units, a catalytic reaction can be carried out in the catalysis unit, the liquid transmission units are communicated with two sides of the catalysis unit, and the gas treatment units are communicated with the top end and the bottom end of the catalysis unit; the catalytic unit comprises a shell, a cavity for providing catalytic reaction is formed in the shell, and an opening is formed in the top end of the shell and used for cleaning and maintaining the catalytic unit; the cover plate is placed at the top end of the shell and seals the opening; the bearing disc is used for bearing the catalyst layer and comprises a first supporting plate and a gauze element, the first supporting plate is fixed to the position of one third to one half of the height of the shell, the first supporting plate is parallel to the bottom face of the shell and fixed to the inner