This powerpoint presentation begins by providing a brief overview of the corrosion history in Tucson, Arizona. Future water quality changes and testing procedures and results are presented. Research objectives included: determine if the current pH target at the Hayden Udall Water Treatment Plant
(HUWTP) can be refined;
determine the relationship between Calcium Carbonate
Precipitation Potential (CCPP)
and the release of iron through bench-scale
testing;
determines the water quality targets necessary in
the distribution system;
determine change in water quality within the
distribution system; and,
determine the water quality targets necessary at
the HUWTP. Summary of results includes:
from a review of the water quality within the
distribution system, a drop of up to 3 mg/L was
observed in the CCPP of the Clearwater blend;
based on the results of the corrosion benchscale
testing statistically significant releases of
iron were observed with CCPPs of 5 mg/L or
less;
it was recommended that a CCPP of at least 8
mg/L was needed at the HUWTP to protect the most
sensitive areas of the distribution system; and,
a CCPP of 8 mg/L relates to a pH target of
approximately 8.1 to 8.2 which is the current pH
target. Includes table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.3 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 39 |
| Published : | 11/01/2007 |
