The ability of ultraviolet (UV) light to disinfect alum floc-associated MS-2 coliphage
was evaluated. Bench experiments were conducted in which MS-2, a viral surrogate, was
either coagulated with kaolin clay particles or aggregated into viral clumps prior to UV
exposure. The bench experiments were designed to represent particle sizes, viral
aggregates, and turbidities encountered in drinking water treatment. A third condition,
consisting of MS-2 in clear, phosphate buffer solution served as a control for
comparison. The results suggest that enmeshment within floc particles and aggregation
into viral clumps protect viruses from UV disinfection. Up to a 1.1-log reduction in MS-2
inactivation was observed due to these factors. Viral enmeshment and aggregation were
confirmed using transmission electron microscopy. Includes 14 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 460 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 06/15/2003 |
