This article discusses the removal of a major group
of disinfection byproducts (DBPs), haloacetic acids
(HAAs), in biologically active carbon (BAC) or
acclimated granular activated carbon (GAC). Precursor
removal has been the main control strategy for
DBPs. Using BAC to remove preformed HAAs is a
new concept. Although it is known that water temperature
and empty bed contact time (EBCT) affect
the removal of HAAs in BAC, this study was undertaken
to gain a better understanding of how these
parameters affect removal. The results suggest that a
10-min EBCT should be used for 4ºC waters and a 5-
min EBCT should be used for waters at 10ºC or
higher.
The results of this study could help utility managers
better control HAAs by improving the general understanding
of the effects of water temperature and EBCT.
Information on HAA removal could be used to provide
an alternative technique for HAA control. Water suppliers
could use the information to improve the design and
operation of GAC filters to achieve an effective reduction
of HAAs. Enhanced HAA removal could help the
water industry better comply with DBP regulations,
improve water quality, and protect public health. Includes 15 references, tables, figures.
| Edition : | Vol. 97 - No. 11 |
| File Size : | 1
file
, 300 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 8 |
| Published : | 11/01/2005 |
