This powerpoint presentation begins by providing a brief overview of the Valley County Water District's four treatment processes. Options to remove or prevent calcification are presented and include: upstream acid addition; in-situ cleaning; antiscalants; and,
packing material replacement. Presentation conclusions indicate the following: periodic in-situ cleanings of packing material appeared
to be the most cost-effective option; however, a cleaning
conducted this year was not completely effective; antiscalants offer an economical solution with minimal
impact observed on perchlorate resins in terms of
capacity or fouling; upstream acid addition may minimize calcium carbonate
precipitation but is cost-prohibitive and requires
downstream acid addition due to pH increases in the
aeration towers; and, packing material replacement is an option but is costly
and results in significant downtime. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 19 |
| Published : | 11/01/2009 |
