The new US Environmental Protection Agency
(USEPA) maximum contaminant level for arsenic in
drinking water (10 ug/L) will require many water
utilities, especially small systems, to add unit operations
for arsenic removal. This has created an immediate
need to find cost-effective methods for removing
arsenic. A recent study conducted on groundwater in
rural Colorado explored using modified coagulation/filtration
(MCF) as an arsenic removal technique.
MCF has been designated by USEPA as a best available
treatment. However, many previous tests for
arsenic removal using this method have used carefully
prepared solutions. The aim of this study was to determine
the operating conditions and limitations of MCF
for removing arsenic from real groundwater. The
results from the Colorado study were then compared
with the predictions obtained from earlier investigations
using carefully prepared solutions. These study
results add to a growing body of evidence that suggests
ferric ion coagulation followed by filtration (either
sand or microfiltration) can be a cost-effective method
for arsenic removal. Includes 26 references, tables, figures.
| Edition : | Vol. 95 - No. 10 |
| File Size : | 1
file
, 340 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 10/01/2003 |
