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VOLATILE ORGANIC DISINFECTION BY PRODUCTS DETERMINATION IN DISTRIBUTION SYSTEM
CHCl3 (ug/L)
90
80
70
60
50
40
30
20
10
y = 84.145x - 64.14
R 2 = 0.8153
0
1 1.1 1.2 1.3 1.4
Cl2 dose (mg/L)
1.5 1.6 1.7 1.8
Figure 1. Chlorine dose as function of CHCl3 concentration in Gilau WTP
In the WTP the presence of the natural organic matter was
determinate with consumption of KMnO4 mg/L – CCO Mn [mgKMnO4/L] –
colorimetric method. The presence of the organic matter in the raw water is
determinate once at the middle of day in every day in Gilau WTP. The
results obtained showed that in the period when the NOM presence in
water was higher also the CHCl3 increases – see figure 2.
CHCl3 (ug/L)
80
70
60
50
40
30
20
10
y = 7.1384x - 24.143
R 2 = 0.6682
0
7 8 9 10
COD (mg KMnO4/L)
11 12 13
Figure 2. Relationship between CHCl3 (μg/L) and presence of
natural organic mater in water
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