AWWA ACE68616

This powerpoint presentation begins by providing a brief overview of ultraviolet (UV) inactivation of Adeno. The motivation for the study included the following points: demonstrate that adenovirus is not reallyextremely resistant to UV;UV can provide a similar level of virusinactivation as chlorine;Ground Water Rule suggests that UV cannot bevalidated for 4-log virus inactivation in a UVreactor; and,the study set out to prove it could and to augment theprevious lab work. The experimental desgin included: Bench Experiments to verify efficacy of MPUV vs LP;establish a UV Reactor test plan to cover arange of UVT and flows;interact with outside experts (US Environmental Protection Agency andState Regulators) to get feedback on the plan; and,carry out CB and field-scale reactor tests andevaluate data. Challenges for Adeno Testing include the following:Titer able to achieve in Reactor (1-5 x 105),hard to obtain high titer adenovirus stocks; working with a pathogenic virus required special handling and precautions; achieving high log reduction in reactorgoverned by influent titer and assay;meeting a dose with validation factors, 1.28 validation factor for UV reactor conditions and28% higher target needed for 4-log; and,~235 mJ/cm². Includes tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

26

File Size:

1 file , 1 MB