The City of Kamloops, British Columbia, recently upgraded its drinking water treatment system
to include coagulation, flocculation, and membrane filtration (i.e., ultrafiltration) treatment
processes. The objective of this study was to determine if implementation of the
membrane treatment facility would reduce the formation of disinfection byproducts (DBPs) within the distribution system.
Phase I of the study investigated trihalomethane (THM) and haloacetic acid (HAA) formation in
two sections of the distribution system, one section that received water treated by coagulation /
flocculation / ultrafiltration / chlorination, and one section that received the same source water
treated only by chlorination. Phase II of the study characterized THM and HAA formation using
a bench scale flow-through material-specific simulated distribution system (MS-SDS), made
from pipe material resurrected from the City of Kamloops distribution system. The results of the
present study showed that implementation of the membrane treatment facility did not
significantly reduce THM or HAA formation in the distribution system. Further analysis
revealed that the THM and HAA precursors in the source water were relatively small and
predominantly hydrophilic. Small and hydrophilic DBP precursors typically cannot be removed
by coagulation / flocculation / ultrafiltration treatment processes. Includes 7 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 840 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 8 |
| Published : | 11/01/2008 |
