This powerpoint presentation begins by providing a brief overview of Fairfax Water (FW), the largest drinking water utility in Virginia. Historical corrosion control facts are presented, and FW changed to a chemical corrosion
control inhibitor (ZnPO<sub>4</sub>) in 1998. Competing regulations including the Safe Drinking Water Act (SDWA) and the Lead and Copper Rule (LCR) vs. the Clean Water Act (CWA) and NPDES caused FW to change their corrosion control inhibitor. The Virginia Department of Health recommended a pipeloop study to determine whether the
change in the corrosion inhibitor
chemical would affect Pb
concentrations. The study demonstrated
that there was not a difference between
the use of ZnPO<sub>4</sub> and H<sub>3</sub>PO<sub>4</sub> as a
corrosion control inhibitor in this
application. The pros and cons of the switch
from ZnPO<sub>4</sub> to H<sub>3</sub>PO<sub>4</sub> are listed. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.6 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 25 |
| Published : | 11/01/2009 |
