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AWWA ACE71097
- Effect of Organic Nitrogen on the Formation of Organic Chloramines
- Conference Proceeding by American Water Works Association, 11/01/2009
- Publisher: AWWA
$12.00$24.00
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-Cl<sub>2</sub>/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-Cl<sub>2</sub>/mg-DON; and,organic chloramines formed upon monochloramination ismore stable. Includes figures.
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