AWWA JAW64053

Traditional chloramine practice involves the additionof ammonia and chlorine nearly simultaneously,minimizing the presence of free chlorine. However,many drinking water treatment plants are not practicingtraditional chloramination; they now have asignificant period of free chlorine exposure that canaccentuate disinfection byproduct (DBP) formation.This article investigates the effects of treatment, pH,and prechlorination on dihaloacetic acid (X₂AA)formation kinetics.The data obtained and subsequent conclusionsdrawn provide new insight into X₂AA formation andcontrol during chloramination to help ensure that chloraminationremains a viable treatment option. Withmany utilities facing a balancing act regarding chlorine,chloramines, and concentration times time requirements,a better understanding of X₂AA formationkinetics with chloramines is essential input in the complicateddecision-making process of weighing disinfectionrequirements against DBP formation. Includes 37 references, tables, figures.

Product Details

Edition:

Vol. 98 - No. 11

Published:

11/01/2006

Number of Pages:

14

File Size:

1 file , 490 KB