Chloramines have been generally used in drinking water distribution systems to
control the concentration of elevated prevalent disinfection byproducts (DBPs)
species such as trihalomethanes (THMs) and haloacetic acid (HAAs). By maintaining
the optimal ratio of chlorine to ammonia, chloramine formation is limited to
monochloramine, a desired component which forms fewer DBPs than free chlorine.
But in real operational systems, the contact time, ammonia doses, application modes,
pH, temperature and bromide ions all have an effect on formed concentrations of
DBPs. Much of the research on chloramines in DBPs has
focused on the surface water sourced water treatment systems.
This study focuses on a groundwater source for the Columbia drinking
water system that is from an alluvial aquifer bordering the Missouri River to the west
and a nearby conservation area to the south. Through a series of simulated
distribution system (SDS) tests on this water, THM formation kinetics is found
under chloramination and correlated to chlorination formation kinetics to predict
THM concentration in the Columbia drinking water distribution system when using
monochloramine as a residual. Includes 3 references, table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 920 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 5 |
| Published : | 11/01/2009 |
