Biological deodorization and aerobic tank combined deodorization system

The invention relates to a biological deodorization and aerobic tank combined deodorization system which comprises a biological deodorization device and an aerobic tank which are connected with each other, the biological deodorization device comprises an odor washing tank, a deodorization biological filter and a demister, the odor washing tank is L-shaped and comprises a vertical gas inlet part and a horizontal gas washing part, a gas inlet is formed in the upper part of the gas inlet part, and a gas outlet is formed in the lower part of the gas washing part; a wetting filler layer is arranged below the air inlet; the deodorization biological filter is arranged on the downstream side of the gas inlet part and located above the gas washing part, and at least an activated carbon filler layer, a polyurethane foam filler layer and a volcanic rock supporting filler layer are arranged in the deodorization biological filter; the demister is arranged on the downstream side of the deodorization biological filter and l