This research investigated the use of the ion exchange
process for the treatment of perchlorate-contaminated drinking
water. Fifteen commercially available resins from five manufacturers
were tested. Computer models were used to evaluate
treatment options, some of which were not typical ion
exchange applications. Three treatment approaches emerged
as viable options to reduce perchlorate to concentrations below
proposed maximum contaminant levels: partial
exhaustion-regeneration using polyacrylic resins, with a
process similar to current nitrate treatment techniques;
partial exhaustion-regeneration using polystyrene resins with
elevated temperature regeneration; and, use of highly selective
resins for perchlorate with resin replacement following
exhaustion.
Water suppliers can use this information to help determine
which ion exchange treatment option will most efficiently remove
perchlorate from their drinking water sources. Selecting the best
option requires water quality information (i.e., concentration of
major and minor anions) as well as site-specific information (i.e.,
access to brine disposal). Includes 16 references, tables, figures.
| Edition : | Vol. 98 - No. 4 |
| File Size : | 1
file
, 510 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 04/01/2006 |
