||Pilot Plant Optimization of the Chlorine Dioxide Treatment Process for Disinfection By-Product Reduction.
Griese, M. H. ;
||Evansville Water and Sewer Utility, IN.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Water pollution control ;
Potable water ;
Water treatment ;
Chlorine dioxide ;
Pilot plants ;
Iron compounds ;
Ferrous chloride treatment ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Previous pilot-plant investigations conducted by the Evansville, Indiana Water and Sewer Utility confirmed the effectiveness of chlorine dioxide treatment for reducing trihalomethane formation. These investigations resulted in a shift away from the utility's pre-chlorination practices and the implementation of raw water disinfection/oxidation using chlorine dioxide. For the past eight years, this treatment alteration has proven effective in maintaining Evansville's total trihalomethane level well below the promulgated maximum contaminant level of 0.1 mg/L. This research endeavor is focusing on the parallel pilot-plant evaluation of the disinfection alternatives of chlorine dioxide and ozone and the reduction of residual concentrations of chlorine dioxide and the inorganic by-product ions of chlorite and chlorate.