AWWA ACE71097

This powerpoint presentation begins by providing a brief overview of reactions between dissolved organic nitrogen (DON)and oxidants (chlorine or monochloramine), a comparison of disinfection schemes, and DON quantification. Analytical methods for organic chloramines are listed, and the formation of organic chloramines - model compounds are presented, along with organic chloramines upon monochloramination of raw waters. Presentation summary for chlorination of the natural organic matter (NOM) isolates and raw waters includes:rapidly formed organic chloramines within 10 minutes;average organic chloramines production (10 minutes) -0.78 (NOM) and 0.96 (raw waters) mg-Cl₂/mg-DON; and,decomposition of organic chloramines occurred over time -decreased by 70% over 1 day.Presentation summary for monochloramination of the NOM isolates and raw waters includes:took much more time to form organic chloramines thanchlorination;average organic chloramines production (24 hours)-0.16 mg-Cl₂/mg-DON; and,organic chloramines formed upon monochloramination ismore stable. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2009

Number of Pages:

31

File Size:

1 file , 1.4 MB