• AWWA WQTC65967
Provide PDF Format

Learn More

AWWA WQTC65967

  • Impact of Feed Water Quality on Biofouling of Nanofiltration Membranes Used for Drinking Water Production
  • Conference Proceeding by American Water Works Association, 11/01/2007
  • Publisher: AWWA

$12.00$24.00


Application of membrane nanofiltration (NF) for surface water treatment requires waterpretreatment prior to NF elements in order to minimize membrane fouling. In this study, thebiofouling potential of three different pretreated river waters was compared. Water A and water Bwere used to feed two parallel pilot trains and water C fed a pilot unit, part of the drinking waterplant of M?ry-sur-Oise (France). During this study, membrane performance parameters(permeability and pressure drop) were continuously monitored. At the end of the experiment, themembrane modules were autopsied and the composition and organization of membrane foulantswere characterized by Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR)spectroscopy, DAPI staining, lectin-binding analysis, and fluorescence microscopy. The ATR-FTIRspectra and fluorescence microscopy observations of the fouled membranes revealed the presenceof a biofilm at the membranes surface for the three feed waters. The microbial cells were mainlyorganized as microcolonies interspersed at the membrane surface. Polysaccharide residues werefound in areas where microcolonies were present and in areas devoid of microorganisms. A positivecorrelation was observed between organic carbon concentration of feed waters and the biofoulingextent at the membrane surface: the higher the dissolved organic carbon (DOC) concentration offeed water, the higher the sessile bacteria counts and relative IR signal (peaks indicative of proteinsand polysaccharides).In conclusion, for the three water qualities studied, the DOC concentration was a relevant parameterto determine the biofouling potential of the pretreated waters. Includes 12 references, figures.

Related Products

AWWA WQTC60611

AWWA WQTC60611

Comparison of an Anionic Polymer to No Polymer Addition for Treating Filter Backwash Water..

$12.00 $24.00

AWWA MTC64524

AWWA MTC64524

Integrated Approach to Construction and Startup of the 96 mgd Lakeview WTP for the Region of Peel..

$12.00 $24.00

AWWA INF52174

AWWA INF52174

Field Performance Monitoring of a Sliplined Watermain..

$12.00 $24.00

AWWA ACE59836

AWWA ACE59836

Water Conservation in Georgia Bringing Efficiency into Mainstream Thinking..

$12.00 $24.00