This study monitored natural organic matter (NOM) characteristics of treated water samples in terms of dissolved organic carbon (DOC),
UVA254, SUVA, XAD 8/4 resin fractionation, HPSEC-DOC/UV, 3D-fluorescence excitation
and emission matrix (EEM). There are a number of underlying hypotheses that relate NOM
properties to treatability. First, chlorination disinfection byproducts (DBPs), coagulatability, and ozone reactivity generally
correlate with a higher SUVA, the magnitude of the SEC-DOC humic substances peak, the
dominance of the EEM humic-like spectral maximum, and a higher HPO fraction. The
magnitude of the SEC-DOC polysaccharide peak correlates with membrane fouling while the
magnitude of the low MW acids peak inversely correlates with biostability. There is some
evidence that haloacetic acid (HAA) precursors are more polar than trihalomethanes (THM)
precursors and that lower SUVA and higher TPI and/or HPI fractions are more influential in
forming HAAs than THMs. The magnitude of the EEM protein-like spectral maximum can be
correlated with nitrogenous DBPs (N-DBPs; e.g., haloacetonitriles (HAAs). While Br- is the
primary determinant of bromate (BrO3
-) formation, the character of NOM also plays a role, with
higher SUVA (HPO fraction) promoting BrO3
- formation. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 26 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 11/01/2005 |
