Water utilities rely on turbidity and particle-count
data as a gauge of water quality, but gas bubbles can
measure as false particles or turbidity and disrupt the
operation of turbidimeters and particle counters.
Because bubbles are harmless, it is important for
utility managers to know when they are causing
spikes in turbidity or particle counts. In this work,
the investigators measured bubbles in bench-top laboratory
experiments and at a full-scale utility.
Although utility managers have long suspected bubbles
of interfering with turbidity and particle count
measurements, this is the first study that confirms
that hypothesis. The results also point out the need
for routine quality assurance/quality control
(QA/QC) for turbidimeters and particle counters,
especially when bubbles are suspected. The study
clearly showed that improved QA/QC on particle
counters and turbidimeters is necessary in water
treatment applications where dissolved gas supersaturation
occurs. Includes 31 references, table, figures.
| Edition : | Vol. 98 - No. 7 |
| File Size : | 1
file
, 440 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 07/01/2006 |
