This powerpoint presentation begins by presenting "Hypochlorite - An Assessment of Factors
That Influence the Formation of Perchlorate
and Other Contaminants"
AWWA WITAF #712 / Water
Research Foundation #4147
Final Report In Press. Study objectives were to: develop and/or validate necessary
analytical methods for chlorate,
perchlorate, bromate, bromide, and
transition metal ions; elucidate mechanism of perchlorate
formation; quantify kinetics and rate law; pH, temperature, ionic strength, concentration,
catalytic effects; develop predictive model; develop control strategies to minimize
perchlorate formation in hypochlorite solutions; simultaneous quantitation of other
contaminants and effects on kinetics for bromide, transition metal ions, and bromate and chlorate; and, occurrence studies on quantifying the concentration in bulk, on-site
generated (OSG), and calcium hypochlorite, and on the impacts on finished water quality for
drinking water and water reuse facilities. Conclusions indicate that: detailed chemical rate law can be used to
predict perchlorate concentration in bulk
hypochlorite;
no observable difference between OSG and
bulk hypochlorite solutions (chlorate,
perchlorate, and bromate) when high purity salts
are used; and, chemical security regulation with potential U.S. Environmental Protection Agency
regulatory determination may have unintended
consequences for drinking water and water
reuse systems. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 19 |
| Published : | 11/01/2009 |
