UV dose measurement and prediction in a thin film UV contactor

摘要

A novel UV photoreactor based on the principle of a water bell had been shown in earlier studies to be effective in disinfecting liquids of high UV absorptivities. The water bells were produced using a nozzle in which an annular jet was made to impact on a plane disc. Photographs taken of bells produced in this way were overlayed with the outlines of bells as predicted by the hydrodynamic model of Lance and Perry [1] and showed good agreement. The hydrodynamic bell model was coupled with a volumetric emission model in order to determine the UV dose delivered to the bell by a single UV source located centrally inside the bell.