This powerpoint presentation presents information on determining the correct dosage that should be used
when designing an ultraviolet (UV) facility. The presentation begins by defining terminology and validation standards, along with validation dose calculation, and design recommendations. Summary and conclusions indicate that:
European validation standards are based
on maintaining a B. subtilis RED of 40
mJ/cm<sup>2</sup>;
LT2ESWTR has a required dose of 12
mJ/cm<sup>2</sup> for 3-log Cryptosporidium;
12 mJ/cm<sup>2</sup> is a "true" dose, not a RED,
and does not include a safety factor;
REDs are specific to the microorganism
and are a function of inactivation kinetics
and dose distribution; the U.S. Environmental Protection Agency (USEPA) developed the validated dose to
account for uncertainties in the validation
process to allow for a comparison to the
LT2ESWTR dose tables;
UV facilities should be designed to
achieve a validated dose that is greater
than or equal to the required dose; and,
the UVDGM or the UV Handbook can be
referenced for more detailed discussions. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.6 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 30 |
| Published : | 11/01/2008 |
