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The last edit to this post was made by goldliyang on 2017-12-9 at 15:16. Brief explanation of the principle of UV photolysis technology: Under the action of high-energy ultraviolet rays in the wavelength range of 170nm–184.9nm (704kJ/mol–647kJ/mol), oxygen in the air is broken down, and then recombined to form ozone； On the other hand, the chemical bonds of malodorous gases are broken, resulting in free atoms or groups ； The ozone generated simultaneously participates in the reaction process, causing the malodorous gases to be ultimately broken down and oxidized into simple, stable compounds such as CO2, H2O, SO2, N2, etc. Note: 1. Whether malodorous substances can be decomposed by photodeodorization equipment depends on whether the bond energy of their chemical bonds is lower than the energy of the UV photons provided. 2. The time for the cracking reaction is extremely short (<0.01 s), while the oxidation reaction takes 2–3 s. 3. If the total power of the UV photons provided is insufficient or the oxygen content is too low, some intermediate by-products will be formed due to incomplete pyrolysis or oxidation, thereby affecting the purification efficiency. This is more evident in organic malodorous substances that are high-concentration macromolecules. 4. The long-term stability and high efficiency of UV photolysis purification require a reaction temperature of <70°C, dust levels of <100 mg/m3, and a relative humidity of <99%. 5. When the conditions are met, the highest purification efficiency of UV photolysis can reach over 99.9%. If the wavelength of the UV light provided is 160nm (742 kJ/mol), the reaction process becomes relatively simpler: formaldehyde is directly broken down into free C* and H* ions, which are then oxidized by O3 to CO2 and H2O. As can be seen from the above, UV radiation of different wavelengths can have varying effects on the photolysis of the same substance. The shorter the wavelength of the UV radiation, meaning the higher the energy of the UV photons, the easier it is to induce photolysis of the substance; conversely, it becomes more difficult, or even no effect is observed at all.