For systems considering ultraviolet (UV) disinfection
and requiring virus inactivation of 3 to 4
logs, adenovirus appears likely to be the limiting
organism in determining reactor design and UV
dose. In its Long Term 2 Enhanced Surface Water
Treatment Rule regulations, the U.S. Environmental
Protection Agency reported that inactivation of
adenoviruses to a level of 4 logs requires a UV dose
of 186 mJ/cm<sup>2</sup>.
Recent bench-scale studies indicate that full-scale
medium-pressure (MP) UV systems may be capable
of achieving significant inactivation of adenovirus
at lower UV doses than are possible with low-pressure
systems. In this study, a protocol for field-scale
testing and validation of adenovirus disinfection by
MP UV light was developed and used to perform a
live adenovirus challenge test showing the level of
adenovirus inactivation possible in a field-scale UV
disinfection system. The reactor studied here demonstrated
that MP UV irradiation technology can
achieve > 4-log reduction at economically viable
UV doses lower than 100 mJ/cm<sup>2</sup>. Includes 16 references, tables, figures.
| Edition : | Vol. 101 - No. 4 |
| File Size : | 1
file
, 1000 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 04/01/2009 |
