Development of a CFD model for predicting disinfection in a large UV reactor.

摘要

UV disinfection has become a promising technology for water disinfection since it was proven that Cryptosporidium is susceptible to UV radiation. Water utilities currently face challenges in implementing UV technology since it is difficult to either measure or predict the level of inactivation delivered by large UV reactors.; One of the solutions available is to use Computational Fluid Dynamics to generate a dose distribution by simulating the transport of microorganisms through a UV reactor. The level of inactivation is estimated by combining a microorganism inactivation response model with the dose distribution.; This study demonstrates that it is feasible to predict the performance of large UV reactors using a three-dimensional CFD approach and its accuracy depends on the number of particles simulated. The results provide a better understanding of the effect of design factors on the performance of UV reactors. It would also facilitate design and implementation of UV reactors.