I. Advantages and disadvantages of sanitary landfill method
The advantages of landfill treatment method is a simpler process, less investment, can deal with a large number of medical waste. The main disadvantages are the need for disinfection before landfill, waste volume reduction, landfill construction investment, need to occupy a large amount of land, produce methane, ammonia, hydrogen sulfide gas, nitrogen, carbon monoxide and a large number of hazardous gases, but also produces oxygen and hydrogen and volatile organic compounds, the need for long-term monitoring of soil and groundwater.
Two, high-temperature incineration advantages and disadvantages
The main advantages of incineration technology is a significant reduction in volume and weight, waste deformation is obvious; suitable for all types of medical waste and large-scale applications; stable operation, disinfection and sterilization and pollutant removal effect is good; the potential heat can be recycled; technology is more mature. Disadvantages are mainly manifested in the high cost, serious air pollution, easy to produce dioxins, polycyclic aromatic compounds, PCBs and other highly toxic substances and hydrogen chloride, hydrogen fluoride and sulfur dioxide and other harmful gases, the need to configure a perfect tail gas purification system; bottom slag and fly ash is harmful .
Three, pressure steam sterilization method advantages and disadvantages
Pressure steam sterilization technology compared with low investment, low operating costs, easy to detect, low residue hazard, disinfection, suitable for a wide range of treatment advantages. The main disadvantage is that the volume and appearance of the basic did not change; there may be air pollutants discharged, easy to produce odor, can not deal with formaldehyde, phenol and mercury and other substances.
Four, chemical disinfection method advantages and disadvantages
Chemical disinfection method has the advantage of simple and convenient process equipment and operation; deodorization effect is good; disinfection process is rapid one-time investment in a small amount of low operating costs. For dry treatment, the waste reduction rate is high, will not produce waste liquid or waste water and exhaust gas. The disadvantages are that dry waste requires a high crushing system and a high level of pH monitoring (automation level) for the operation process. Wet waste treatment processes generate waste liquids and gases, and most disinfectant solutions are harmful to humans. It is not suitable for treating chemotherapy waste, radioactive waste, volatile and semi-volatile organic compounds.