• AWWA QTC98349
Provide PDF Format

Learn More

AWWA QTC98349

  • Efficacy of Pulsed White Light to Inactivate Microorganisms
  • Conference Proceeding by American Water Works Association, 01/01/1998
  • Publisher: AWWA

$12.00$24.00


This paper discusses the PureBright point-of-use system that utilizes a pulsed "white" light in the broad spectrum containing wavelengths from 200nm in the ultraviolet to about 1nm in the near infrared with peak emissions between 400 and 500nm. This "pulsed light" is thought to cause damage to an organism's DNA, thereby rendering it non-infectious. The PureBright unit was challenged with Klebsiella terrigena, poliovirus type 1 strain Lsc2ab, simian rotavirus SA11 and Cryptosporidium parvum over 8 days which included two 48 hour stagnation periods. The PureBright unit was able to achieve a >7 log inactivation of Klebsiella, a >4 log inactivation of polio and rotavirus and a >4 log inactivation of Cryptosporidium parvum. The PureBright unit was able to meet the inactivation levels for bacteria, virus and protozoa specified in the EPA Guide Standard and Protocol for a microbiological water purifier. Pulsed white light is an important emerging technology for the inactivation of microorganisms from drinking water.

Related Products

AWWA CSC94024

AWWA CSC94024

Automated Demand Allocating, Updating and Forecasting Through Integration of GIS, Distribution Syst..

$12.00 $24.00

AWWA 51601

AWWA 51601

Complying With the D/DBPR, ESWTR, and Backwash Recycle Rule at 12 Water Treatment Plants in the Sout..

$12.00 $24.00

AWWA JAW71677

AWWA JAW71677

Journal AWWA - A High-Volume Sampling Method for Total Coliform and E. coli..

$15.00 $30.00

AWWA JTMGT69648

AWWA JTMGT69648

One Step at a Time: ASA Takes an Incremental Approach to Asset Management..

$12.00 $24.00