Hospitals for infectious diseases (including general hospitals with infectious wards) should have special septic tanks。Infectious pollutants contaminated by the pathogens of infectious diseases, such as fecal matter, must be strictly disinfected in accordance with the relevant provisions of China's health and epidemic prevention。After disinfection, feces and other excrement should be disposed of separately or discharged into a special septic tank, and its supernatant into the hospital sewage treatment system。 Hospitals without septic tanks should dispose of disinfected excreta as medical waste。
When designing the sewage treatment system of a new (reformed or expanded) hospital, the sewage of the hospital ward, non-ward, infectious ward and non-infectious ward should be collected separately。Existing hospitals should, as far as possible, collect sewage contaminated with infectious agents separately from other sewage。Sewage of special nature (such as wastewater containing heavy metals, oily wastewater, washing and printing wastewater, etc.) should be collected separately and treated with hospital sewage after pretreatment, and special sewage should not be discharged into the sewer at will。
Radiology wastewater and photosensitive wastewater shall be recycled and treated by professional companies。Other wastewater from the Radiology department can be discharged into the integrated sewage treatment system after standing in the attenuation tank for 2 months。
Secondary treatment of infectious disease medical wastewater treatment equipment: The secondary treatment process is "grille → pre-aeration regulation tank → New UBR system → contact disinfection"。The hospital sewage enters the pre-aeration regulating tank through the septic tank。The front of the pre-aeration regulating tank is provided with an automatic grille。A lifting pump is installed in the regulating tank. After the sewage is lifted, it enters the new UBR system for biological treatment and sludge precipitation. The effluent enters the contact tank for disinfection and discharge up to standard。
