Enzyme floating filler denitrification nitrogen removal device

The utility model discloses an enzyme floating filler denitrification nitrogen removal device which comprises a water conduit, a cushion layer, a filler layer, a water outlet, an exhaust port, an outer shell, a sodium thiosulfate adding port and a sewage treatment port, the outer shell is of a box-shaped structure, the water conduit is arranged at the bottom of the outer shell, the cushion layer is arranged at the bottom in the outer shell, the filler layer is arranged above the cushion layer, and the exhaust port is arranged above the filler layer. The packing layer is of a special packing structure, the water outlet is formed in the upper portion of the side wall of the outer shell, the exhaust port is formed in the top of the outer shell, a water backwashing port and an air washing port are formed in the lower portion of the side wall of the outer shell, and the water diversion pipe is communicated with a sodium thiosulfate adding port and a sewage treatment port. The enzyme floating filler denitrification