AWWA ACE68965

This powerpoint presentation begins by providing an outline of the presentation that includes the following: ClO₂ and its byproducts in distributionsystems;occurrence of ClO₂, ClO₂^- and ClO₃^-;fate of ClO₂, ClO₂^- and ClO₃^-;effect of ClO₂ on water quality;tastes and odors;natural organic matter (NOM), biomass, and nitrification; and,corrosion. Presentation summary and conclusions indicate the following:fate of ClO₂ in distributions systems;decrease with increasing water age whenClO₂ is used as residual disinfectant;ClO₂ may reform in presence of Cl₂;fate of ClO₂^- in distributions systems;variable, no trends;decrease with increasing water age; fate of ClO₃^- in distribution systems;generally stable when ClO₂ is used asresidual disinfectant;increase in presence of Cl₂; formation of offensive odors atcustomers' houses when ClO₂ is used asresidual disinfectant;successful cases;variable effects of ClO₂ on biomass; may help control nitrification;effects of ClO₂ on corrosion:may not promote corrosion anymore than Cl<sub>2M/sub>or monochloramine;corrosion byproducts reduce ClO₂ into ClO₂^-,then Cl^-. Includes tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

29

File Size:

1 file , 1000 KB