Domestic medical wastewater contains pathogens, heavy metals, disinfectants, organic solvents, acids, alkalis, and radioactive wastewater. The main departments and facilities that generate wastewater in hospitals include: drainage from treatment rooms, laboratories, wards, laundry rooms, X-ray photo processing, animal rooms, isotope therapy and diagnosis, operating rooms, etc.; domestic wastewater discharged by hospital administration and medical staff, and drainage from canteens, single dormitories, and family dormitories.