The Clayton County (Georgia) Water Authority (CCWA) has installed ultraviolet (UV) disinfection
systems at three water treatment plants. The CCWA's projects were designed, constructed, and
tested in advance of publication of the proposed Ultraviolet Disinfection Guidance Manual
(UVDGM) by the US Environmental Protection Agency (USEPA) in June 2003. Onsite validation
testing was successfully completed at the three facilities early in 2003. Following the publication
of the proposed UVDGM, the UV system configuration and validation results for the CCWA's
Freeman Road plant were analyzed under the UVDGM framework. A comparison to the Tier 1
requirements indicated that not all criteria were met, making a Tier 2 analysis necessary. From
the Tier 2 analysis, the UV safety factors and dose requirement were reduced by approximately
12% compared with the proposed Tier 1 dose requirement. These analyses showed that the CCWA
systems are surpassing all potentially applicable USEPA requirements, and the CCWA is
providing enhanced public health protection as intended at project inception. As a result of these
analyses, significant comments, focused on simplifying the proposed UVDGM and enhancing
its ease of use, were submitted to the USEPA.
Includes 24 references, tables, figures.
| Edition : | Vol. 96 - No. 10 |
| File Size : | 1
file
, 370 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 10/01/2004 |
