• AWWA ACE61719
Provide PDF Format

Learn More

AWWA ACE61719

  • Rapid Characterization of the Changes in Dissolved Organic Matter Polarity and Size During Water Treatment
  • Conference Proceeding by American Water Works Association, 06/17/2005
  • Publisher: AWWA

$12.00$24.00


Characterization of dissolved organic matter (DOM) is extremely important for water utilities inorder to minimize potential detrimental effects of disinfection byproducts formation, fouling ofmembranes and biological re-growth and off-taste and odor occurring in the distribution system.Diverse analytical methods have been developed for the characterization of DOM, mostly relyingon complex and lengthy procedures limiting real time information. In addition, most DOMcharacterization methods include preparation steps, such as changes in pH, which may change theDOM structure and conformation from its natural state. Rapid characterization of DOM and how itevolves throughout treatment processes is needed to be able to modify treatment parameters asneeded to minimize the effects of DOM. PRAM (polarity rapid assessment method), fluorescenceEEM (excitation emission matrix) and HPLC-SEC (size exclusion chromatography) offer greatadvantages for the continuous monitoring of DOM changes in treatment facilities with minimumsample preparation steps. These techniques offer the advantage of providing information in shortperiods of time. This paper assesses the changes in DOM polarity and size characteristics throughthe water treatment process at the River Mountains Water Treatment Facility in Henderson, Nevada,indicating the value of the approach. Initial data shows temporal variation in DOM polarity as wellas differences in the effects of ozone pretreatment as measured by the PRAM method. Size dataindicates minimum differences in molecular weight distributions. A pre-concentration step,required prior to analysis of DOM size distribution, may be inhibiting the detection of differences inmolecular weight distributions. Fluorescence data show a reduction in the intensity of the fulviccomponent between influent and finished waters. Includes 16 references, tables, figures.

Related Products

AWWA WaterStats7av2

AWWA WaterStats7av2

WATER:\STATS 1996 Survey, Complete Set (MS ACCESS FORMAT)..

$39.00 $78.00

AWWA ACE68805

AWWA ACE68805

Advanced Recycled Water Treatment: An Effective Long Term Strategy for Two Agencies..

$12.00 $24.00

AWWA WQTC60699

AWWA WQTC60699

Determination of TOCl, TOBr and TOI in Drinking Water by Pyrolysis and Off-line Ion Chromatography..

$12.00 $24.00

AWWA WSC61416

AWWA WSC61416

Lessons Learned from Water Contamination Emergency Exercises in Washington State..

$12.00 $24.00