The core technology of microwave thermal sterilization is to use the thermal effect and non-thermal effect of microwave to kill germs. Microwave refers to electromagnetic waves with a frequency of 300 MHz.
Brief introduction of sterilization mechanism of microwave thermal effect: Biological cells are condensed media composed of complex compounds such as water, protein, nucleic acid, carbohydrate, fat and inorganic substances. Under the strong microwave field, the temperature of the medium rises, and the spatial structure changes or is destroyed. protein denaturation affects its solubility, viscosity, expansibility and stability, thus losing its biological activity.
Brief introduction of non-thermal sterilization mechanism of microwave: Microwave can change biological energy, biological arrangement, polymerization state and its movement law. Ion flow induced by microwave field will affect the charge distribution near the cell membrane, resulting in the damage of membrane barrier function and membrane dysfunction, thus interfering with or destroying cell ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). Under the action of microwave field force, hydrogen bonds can be relaxed, broken or recombined. Induce gene mutation or chromosome aberration, thus affecting the change of its biological activity, delaying or interrupting the stable inheritance and proliferation of cells. Simply put, microwave sterilization is the result of the interaction between microwave thermal effect and non-thermal effect.
Microwave automatic medical waste treatment system carries out comprehensive sterilization treatment on medical waste to make it harmless. The system adopts high-power microwave sterilization, supplemented by high-intensity ultraviolet sterilization, and is equipped with air load prevention and laser automatic tracking system, which has perfect automatic protection and microwave leakage prevention functions.
Plasma treatment technology
The principle of plasma treatment technology is to fill the cathode and anode of the electrode with carrier gas (generally inert gas argon, air, etc.). ). Under the action of electric field, tiny ions in the carrier gas generate directional motion, which further enhances the application of electric field, ionizes more carriers, generates ions with higher charges, and performs directional motion. This chain reaction turns the carrier gas into a conductive gas. Because the number of anions and cations is the same and they move in opposite directions, this region becomes the plasma region of carrier gas.
The conduction of carrier gas leads to the conduction between anode and cathode, which leads to violent discharge and arc. This phenomenon is also called arc discharge. Arc plasma is characterized by low voltage and high current, accompanied by strong light and high heat. At the center of the plasma, the high temperature can reach about 20000℃, and the temperature of the whole plasma is between 5000℃ and 20000℃.
When waste is added to the plasma, any organic matter will be instantly broken into atomic state at a high temperature exceeding 12000℃. This high-temperature decomposition is very thorough, and due to the characteristics of arc discharge, local ultra-high temperature is generated, and the utilization rate of electric energy is extremely high, without any fuel and oxygen.