Metropolitan Water District of Southern California (Metropolitan) compared
experimental and modeled disinfection performance of a large-scale ultraviolet
(UV) disinfection reactor using computational fluid dynamics and irradiance (CFD-i)
modeling software. The UV reactor consisted of four, 4-kW lamps mounted
perpendicular to flow in a 24-inch diameter reactor at treating 3 million gallons per
day (MGD). Validation testing of this reactor was conducted with MS-2 coliphage.
Validation tests presented in this paper were conducted with water produced from a
conventional treatment plant operating with ozone and biological filtration. Three-dimensional
CFD-i modeling of the polychromatic system operating under design
conditions (three lamps on, one standby), and using either particle tracking or
scalar transport based modeling techniques, predicted MS-2 inactivation within
0.1 log<sub>10</sub> of validation results. Future work will develop CFD-I based tools to assist
engineers in the design of large UV treatment systems (>500 MGD) for disinfection
of filtered surface water. Future work will also investigate the ability of CFD-i
modeling to predict disinfection effectiveness under adverse hydrodynamic and
water quality conditions. Includes 17 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.3 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 06/17/2004 |
