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Chlorine dioxide (ClO2) is effective as both a disinfectant
and an oxidant in wastewater treatment.
The required dose of ClO2 will vary with water conditions and the
degree of contamination present.
For most municipal and other wastewater systems, a chlorine dioxide
residual concentration of up
to 5 ppm is sufficient to provide adequate disinfection. For sulfide
odor control, between pH 5-9, a minimum of 5.2 ppm (wt) of chlorine
dioxide should be applied to oxidize 1 ppm of sulfide (measured as
sulfide ion). For phenol destruction, at pH less than 8, 1.5 ppm chlorine
dioxide will oxidize 1 ppm phenol; at pH greater than 10, 3.3 ppm
chlorine dioxide will oxidize 1 ppm phenol. |
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