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Fourth IWA Specialty Conference on Natural Organic Matter:<br />
From Source to Tap and Beyond<br />
Part 2 - Effect of Oxidation on UVA<br />
3.5<br />
3<br />
2.5<br />
2<br />
1.5<br />
1<br />
0.5<br />
0<br />
Specific UV Absorbance (SUVA)<br />
0<br />
Raw<br />
0<br />
-18%<br />
-15%<br />
Ozonated<br />
1mg/mg<br />
DOC<br />
-30%<br />
Ozonated<br />
2mg/mg<br />
DOC<br />
-28%<br />
-65%<br />
-79%<br />
Ozonated<br />
Extended<br />
Dose<br />
-7%<br />
-19%<br />
UV<br />
4000mJ/cm2<br />
& 0mg/L<br />
H2O2<br />
SUVA<br />
UVA<br />
-45%<br />
-70%<br />
UV<br />
2000mJ/cm2<br />
& 10mg/L<br />
H2O2<br />
-51%<br />
UV Absorbance (UVA)<br />
-81%<br />
UV<br />
4000mJ/cm2<br />
& 10mg/L<br />
H2O2<br />
0.18<br />
0.16<br />
0.14<br />
0.12<br />
0.1<br />
0.08<br />
0.06<br />
0.04<br />
0.02<br />
0
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