Investigating Polychromatic UV Complexity: Models and Experiments to Determine Polychromatic Correction Factors

摘要

A bioassay was conducted on a set of polychromatic UV reactors to measure the impacts ofrnpolychromatic variables (sleeve spectra, water spectra, microbial action spectra), reactor design,rnand operating variables (flow, UVT, power, disinfection kinetics). The testing was modeledrnusing a state of the art computational disinfection model, using inputs from the actual testing.rnThe model agreed well with the measured results (y=0.90 x, r~2=0.985). The bioassay was veryrnrepeatable with low COVs (the majority of fully replicated tests had COVs < 10%). Directrncomparisons of polychromatic variables showed differences in measured MS2 ranging from -4%rnto 32%, depending upon the compared conditions. It is noteworthy that doped sleeves did notrnalways result in large dose reductions compared to synthetic quartz sleeves, that Superhume didrnnot always result in larger correction factors than LSA, and long-path-length reactors did notrnalways result in smaller correction factors than short-path-length reactors.