||Effect of bromide on chlorination byproducts in finished drinking water /
||Cincinnati Univ., OH.;Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div.
|| U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory,
Potable water ;
Water treatment ;
Water chemistry ;
Chlorine organic compounds ;
Bromine organic compounds ;
Water pollution ;
Statistical analysis ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
To investigate the role of bromide ion concentration on formation and speciation of non-trihalomethanes (non-THMs) chlorination organic byproducts, a two block full factorial matrix was designed to statistically evaluate the influence of various parameters which are relevant to drinking water treatment. The first block used a high chlorine dose and the second block a low dose. The factorial design incorporated one factor (Br) at four levels and two factors (time, pH) at three levels for each block. The percent of total organic halogen (TOX) attributed to 9 haloacetic acids (HAAs), 4 THMs, 3 dihaloacetonitriles (DHANs) (each as a group) and individual THMs and HAAs were determined. Br in chlorinated humic acid solution was shown to shift the distribution of THMs, HAAs and DHANs to more brominated species. The percentage of TOX made up of total THMs plus total HAAs significantly increases with increasing pH and bromide concentration. THMs were the largest class of chlorination byproduct detected on a weight basis, and the HAAs were found to be the second largest portion of the TOX at high pH in drinking water.
"Ronald C. Dressman, technical project monitor." Microfiche.