Medical sewage treatment device with sterilization function

Abstract

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.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment device for medical sewage. Background technique [0002] Medical sewage is mainly the sewage discharged from the hospital's consulting room, laboratory, ward, laundry room, X-ray room and operating room, etc. The source and composition of the sewage are very complicated. Hospital sewage contains a large number of pathogenic bacteria, viruses and chemical agents, and has the characteristics of space pollution, acute infection and latent infection. [0003] The effluent from the sedimentation tank enters the disinfection contact tank, so that the sewage and the disinfectant maintain a certain contact residence time to ensure that the disinfectant can effectively kill the bacteria in the water, and the effluent is discharged to the municipal pipe network. According to the "Water Pollutant Discharge Standard for Medical Institutions" (GB18466-2005), the contact time of se...

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Problems solved by technology

The reason why the "Discharge Standard of Water Pollutants for Medical Institutions" (GB18466-2005) requires that the contact time of sewage in infectious disease hospitals should not be less than 1.5 hours, and the contact time of sewage in general hospitals should not be less than 1.0 hours. The main reason is that disinfection is a key link in medical sewage. Prolong the sewage contact time, so as to ensure that the sewage is fully contacted with the disinfectant, and ensure that the sewage is fully disinfected as much as possible; the longer sewage contact time in the disinfection contact pool reduces the efficiency of sewage treatment in the disinfection contact pool. Timely sewage discharge and treatment can only make the size of the disinfection contact pool very large. However, since most of the medical sewage treatment devices are located in the center of the city where the land is very expensive, they can only use the buried structure, but the ones with too large an area The disinfection contact pool undoubtedly makes the overall size of the medical sewage treatment plant too large, which is likely to cause land subsidence, which is the most worrying problem in modern cities. In addition, the medical sewage treatment plant with an oversized area will bear greater water pressure and stronger sewage and sewage treatment agents Corrosion problems have higher requirements for the strength of medical sewage treatment equipment, which not only increases the technical difficulty, but also increases the construction cost

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