All waters foul the quartz sleeves that enclose the lamps used in UV reactors. The
corresponding reduction in delivered UV dose due to sleeve fouling necessitates the
need for cleaning. Several cleaning strategies are currently being used in the UV
treatment industry. To evaluate these strategies and to validate the performance of any
cleaning mechanism, a testing protocol based on the current NWRI Guidelines
was proposed. The protocol was used to study fouling rates of low-pressure and
medium-pressure drinking water UV systems and showed both systems fouled at some
rate regardless of lamp technology and that water quality had a significant impact on
site fouling potential. The protocol was followed to evaluate long-term cleaning
performance automated chemical/mechanical cleaning and showed these systems were
capable of maintaining high sleeve UV transmittance without maintenance for periods of
at least six months. Includes 2 references, tables, figures, appendix.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 250 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/02/2003 |
