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The article introduces the mechanism and application of advanced oxidation technology using vacuum ultraviolet radiation (VUV, 254 +185 nm) to degrade pollutants in water using aquatic life oxidizing substances, as well as its application in the water treatment industry. It also includes VUV radiation to produce oxygen or ozone in the air. This article provides an overview of the advantages and limitations of the VUV process, as well as the main factors affecting decolonization. It also looks forward to its possible applications and future development directions in water treatment, providing reference for subsequent research on vacuum ultraviolet organic dye wastewater and proposing research suggestions. [ABSTRACT FROM AUTHOR]

Using vacuum ultraviolet (VUV) to activate hydrogen peroxide (H2O2) to generate more reactive oxygen species (ROS) for decolonization and removal of dyes. The effects of H2O2 dosage, initial pH value of the solution, and initial dye concentration on the degradation of Acid Red G (ARG) and Rhoda- mine B (RhB) in the system were investigated. The results showed that when the dosage of H2O2 was 3 mmol/L, the decolorization rate of ARG and RhB at 80 mg/L could reach 96.3% and 98.4% respectively at 7 min. The removal rate of ARG and RhB increased with the increase of initial H2O2 concentration, but their promoting effect on the dye was limited when the concentration exceeded 3 mmol/L. The dye decolorization process follows a quasi first order kinetic model. Under acidic conditions, the decolorization and degradation of dyes have higher efficiency, while degradation is inhibited in alkaline environments. The free radical capture experiment and EPR detection results indicate that hydroxyl radicals (⋅ OH) and singlet oxygen (¹O2) are the main ROS, with ⋅ OH accounting for the main role.The presence of inorganic anions (HCO3, Cl-, NO3-, SO42-) can inhibit dye degradation. Through UV visible absorption spectroscopy analysis, it is preliminarily inferred that ARG is first attacked through the benzene ring, followed by the cleavage of azo bonds and naphthalene rings, and then mineralization;RhB mainly involves the destruction of conjugated structures, N-site deethylation, aromatic ring cracking, and mineralization. [ABSTRACT FROM AUTHOR]