AWWA QTC98348

This study presents results from batch and flowing experiments with pulsed-UV radiation. Experiments were conducted to: demonstrate disinfection efficiency with heterotrophic plate count (HPC) bacteria and male-specific (MS-2) coliphage; provide initial disinfection byproducts (DBP) production results; and, determine approximate full-scale operating costs for pulsed UV. In batch tests, pulsed UV was found to easily inactivate naturally occurring HPC bacteria (>4-log inactivation). Exposure of MS-2 to pulsed UV resulted in >8-log inactivation. Flowing water tests - simulating water passing extremely close to the flash lamp during full-scale operation - showed increases in aldehydes and carboxylic acids (from 48 to 1,132 percent) and biodegradable dissolved organic carbon (BDOC) (from 53 to 119 percent). The average operating costs (not including maintenance or replacement of consumable items) for a full-scale unit that could treat 0.72 cubic feet per second (cfs) with a minimum 2.4-log MS-2 coliphage inactivation were calculated to be $6.58 per acre-foot.

Product Details

Published:

01/01/1998

ISBN(s):

0898679796

Number of Pages:

25

File Size:

1 file , 270 KB