Biological filter deodorization device

The utility model discloses a biological filter deodorization device which comprises a treatment tank body, the outer surface of the treatment tank body is fixedly connected with a liquid discharge pipe, a liquid inlet pipe, a gas inlet pipe and a gas outlet pipe, the upper part of the treatment tank body is connected with a mounting cover through a fixing bolt, and the upper surface of the mounting cover is provided with a control motor; the right side end of the air inlet pipe is fixedly connected with an adapter pipe. According to the device, the treatment tank body, the gas outlet pipe, the control motor, the rotating shaft, the dispersion disc, the collection cover and the adapter pipe are arranged, so that when a sudden failure occurs, odor in the gas outlet pipe cannot be directly discharged into the external environment, the surrounding environment is prevented from being influenced, and the device is relatively comfortable to use; the internal odor can be in full contact with the absorption liquid in