• AWWA WQTC56980
Provide PDF Format

Learn More

AWWA WQTC56980

  • Inactivation of E. coli and MS2 Coliphage With Ultrasound and Chlorine
  • Conference Proceeding by American Water Works Association, 11/01/2002
  • Publisher: AWWA

$12.00$24.00


The effectiveness of ultrasound for inactivation of Escherichia coli and MS2 coliphage was quantified. The results showed that sonication alone could inactivate both organisms to non-detectable levels, especially with long sonication times. A high power to volume ratio (900 W/L) provided better inactivation than a low ratio (180 W/L). Inactivation resulted predominantly from temperature effects as temperature increased to greater than 70C in less than 10 minutes at 900 W/L. Sequential application of sonication followed by chlorination did not show synergy; rather, inactivation by the two disinfectants was less than additive. Simultaneous application of sonication and chlorination showed significant synergism. Even with short contact times, when temperature increases were not a factor, 4 to 5 log10 inactivation of E. coli was achieved by simultaneous disinfection, compared to less than 2 log10 inactivation that would be predicted if the effects were only additive. Similar trends were observed in MS2 inactivation experiments. Includes 8 references, tables, figures.

Related Products

AWWA DSS60330

AWWA DSS60330

Developing Nashville's Master Water Plan..

$12.00 $24.00

AWWA CONS51061

AWWA CONS51061

Rates, Water Budgets and Outdoor Water Use..

$12.00 $24.00

AWWA ACE99537

AWWA ACE99537

Leveraging Optimization Success Throughout a Utility..

$12.00 $24.00

AWWA ACE95175

AWWA ACE95175

FIELD LOK Gaskets, An Effective Ductile Iron Pressure Pipe Joint Restraining System..

$12.00 $24.00