Increasingly stringent regulations on pathogen inactivation and formation of disinfection
byproducts (DBPs) has prompted interest in alternative disinfection strategies. One such
alternative is sonication. While prior research has demonstrated the inactivation kinetics
of sonication for bacteria and protozoa, little is known regarding the impact of ultrasonic
treatment on DBP formation. The objective of this research was to quantify the impact of
sonication on trihalomethane (THM) formation. Water samples with varying
concentrations of natural organic matter (NOM) were treated with sonication at 20 kHz for 30
seconds to 10 minutes, and compared to control samples with no sonication. After
treatment, samples were chlorinated and THMs were extracted after reaction times from
1 to 7 days. For experimental water with 1 mg/L NOM, THM formation potential was
reduced by 40% for sonication times of 30 seconds, 5 minutes and 10 minutes. Additional
experiments are needed to increase precision of the experimental data; however, this
study supports the potential for reducing THM formation using sonication. Includes 9 references, table.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 100 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 4 |
| Published : | 11/01/2007 |
