The invention discloses a medical
sewage treatment device with a sterilization function. The device comprises a primary
sedimentation tank, a contact oxidation tank, a secondary
sedimentation tank, a sterilization tank and a
sludge tank which are connected in sequence, wherein a spray rotary
nozzle component is arranged in the sterilization tank and comprises a rotary shaft, an upper
nozzle set and a lower
nozzle set, and the upper nozzle set and the lower nozzle set are in rotary connection with the rotary shaft; the upper nozzle set comprises two first long cross rods and two first short cross rods, the two first long cross rods and the two first short cross rods are connected with the rotary shaft, an upper nozzle is connected to the
tail end of each first long cross rod, and an upper nozzle is connected to the
tail end of each first short cross rod; the lower nozzle set comprises two second long cross rods and two second short cross rods, the two second long cross rods and the two second short cross rods are connected with the rotary shaft, a lower nozzle is connected to the
tail end of each second long cross rod, and a lower nozzle is connected to the tail end of each second short cross rod; a communicating
pipe is arranged between the secondary
sedimentation tank and the sterilization tank, a water pump is arranged on the communicating
pipe which is connected with the rotary shaft through a T-shaped water connector, the water connector comprises a cross rod part and a longitudinal rod part, a hollow cross rod channel is formed in the cross rod part, and a hollow longitudinal rod channel is formed in the longitudinal rod part. The device has high and stable sterilization efficiency.