• AWWA MTC93060
Provide PDF Format

Learn More

AWWA MTC93060

  • Removal of Humic Substances With Membranes System, Use and Experiences
  • Conference Proceeding by American Water Works Association, 01/01/1993
  • Publisher: AWWA

$12.00$24.00


A series of pilot tests and experiences from three full scale plants are summed up in this paper. It is evident that treatment of water with high content of humic substances are difficult because of long term fouling. A significant layer of gel-like matter will build up on to the membrane during 1000 to 2000 hours of operation with no cleaning of the membrane. Fine absolute filtration below 50 um seems to protect better from fouling than deep bed media filters. Cleaning should be done at least once a week, depending on solution strength, with dedicated agents. This way a flux level of 12-20 l/m2.h can be achieved with water temperatures below 10C. Proper choice of membrane for soft raw waters will be those with pore sizes of 1-2 nm and highly hydrophilic surface. Thus the operating pressure could be kept to a minimum (3-6 bars) to avoid excessive compression of the fouling layer, and still maintain a color removal of about 90%.

Related Products

AWWA ACE94097

AWWA ACE94097

The Effects of Water Shortage on California's Green Industry..

$12.00 $24.00

AWWA ACE70642

AWWA ACE70642

The Business Case for Top-Notch Customer Service..

$12.00 $24.00

AWWA ACE99562

AWWA ACE99562

Ultrafiltration Membrane Performance Enhancement on Surface Water Treatment Using Clarification Step..

$12.00 $24.00

AWWA DSS63735

AWWA DSS63735

Energy Consumption of Advanced Water and Wastewater Treatment Technologies..

$12.00 $24.00