The objectives of this powerpoint presentation were: to formulate a surface complexation model
to simultaneously predict natural organic matter (NOM)
sorption and particle stability; and,
to calibrate the proposed model with data
from AWWA's Enhanced Coagulation and
Softening Database. The presentation outlines the modeling approach, including: Overview of the Diffuse Layer Model (DLM); reactions of NOM; calibration data; surface complexation reactions; and, model parameters.Results are presented, along with conclusions that include: DLM provides excellent prediction of dissolved organic carbon (DOC) removal
for seven source waters;
surface potential prediction requires consideration
of other potential-determining ions (e.g., Ca<sup>2+</sup>,
CO<sub>3</sub>
<sup>2-</sup>, SO<sub>4</sub>
<sup>2-</sup>);
best model fits were obtained for waters with low
and moderate alkalinity, further research is
needed to improve model for high-alkalinity waters; and,
the DLM yields practical information that can be
used to optimize treatment.
| Edition : | Vol. - No. |
| Number of Pages : | 27 |
| Published : | 06/01/2007 |
