The two-stage Disinfectants/Disinfection Byproducts
Rule promulgated by the US Environmental Protection
Agency (USEPA) requires "enhanced coagulation,"
which attempts to control the formation of disinfection
byproducts (DBPs) through the removal of total organic
carbon (TOC). Utilities must achieve TOC removals as
prescribed by the USEPA's enhanced coagulation matrix.
This research proposes an alternative matrix based on
specific ultraviolet absorbance (SUVA) rather than TOC.
The authors analyzed data collected under the
Information Collection Rule and found a clear relationship
between SUVA, source water characteristics,
and the effectiveness of coagulation for the removal
of TOC and UV-absorbing substances. Research
findings showed the ability of SUVA to predict the
reactivity and removal of natural organic matter
(NOM). In this article the authors propose that
enhanced coagulation requirements based on SUVA
would facilitate compliance with maximum contaminant
levels and help utilities optimize coagulant dosing
and NOM removal as well as control the generation
of DBPs. Includes 28 references, tables, figures.
| Edition : | Vol. 98 - No. 7 |
| File Size : | 1
file
, 450 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 07/01/2006 |
