• AWWA MTC69699
Provide PDF Format

Learn More

AWWA MTC69699

  • Mechanisms of Coupled Organic and Colloidal Fouling of a Low-salt Rejecting Nanofiltration Membrane
  • Conference Proceeding by American Water Works Association, 11/01/2009
  • Publisher: AWWA

$12.00$24.00


This powerpoint presentation begins by providing a brief overview of typical foulants in waterand wastewater. Research objectives were to: investigate the impact of differentdissolved organic foulants on combinedfouling; and, elucidate the mechanismsresponsible for the enhanced fluxdecline during combined fouling oforganic and colloidal foulants. The experimental approach included:characterizing organic-colloid and organic-membraneinteractions bymeasuring adsorption of organic foulants onsilica surface;characterizing the surface properties of the silicacolloids and the membrane surface in thepresence and absence of the organic foulants; and,cross-flow membrane filtration experiments. Presentation conclusions indicate the following: different dissolved organic compounds havevery different effects on the fouling behaviorof silica colloids;dissolved organic matter may affect colloidaldeposition by modifying surface properties ofthe colloid and the membrane;hindered back diffusion can act as acombined fouling mechanism; and,cake layer structure may be an importantfactor in combined fouling. Includes figures.

Related Products

AWWA WQTC64011

AWWA WQTC64011

Indirect Detection of Intentional Chemical Contamination in the Distribution System Using Low Cost T..

$12.00 $24.00

AWWA DSS92016

AWWA DSS92016

Corrosion Failures in the Water Industry Case Histories..

$12.00 $24.00

AWWA WQTC69386

AWWA WQTC69386

Implementation of Low-Pressure Membrane Technology: Estimating Log-Removal Value (LRV) Uncertainty u..

$12.00 $24.00

AWWA ACE70859

AWWA ACE70859

The Effect of Partial Lead Service Line Replacements on Lead Leaching..

$12.00 $24.00