Working Principle of Medium-Pressure UV Disinfectors
A medium-pressure UV disinfector uses a medium-pressure mercury lamp to generate broad-spectrum ultraviolet light (mainly 200–300 nm). High-energy UV photons penetrate the cell walls of microorganisms and destroy their DNA and RNA structures, preventing them from reproducing and causing diseases, thus achieving effective disinfection.
Unlike low-pressure UV lamps that emit only a single wavelength, medium-pressure UV systems provide higher intensity and wider spectrum. They not only inactivate microorganisms but also decompose some organic compounds and destroy photoreactivation enzymes, greatly reducing the risk of microbial photoreactivation and achieving more thorough disinfection.