The formation of the chlorine dioxide (ClO<sub>2</sub>) byproduct chlorite (ClO<sub>2</sub><sup>-</sup>) ion typically limits the
maximum ClO<sub>2</sub> dose to ~1.25 mg/L to reliably ensure that ClO<sub>2</sub><sup>-</sup> levels do not exceed its maximum
contaminant level of 1.0 mg/L. This ClO<sub>2</sub> dose may be inadequate to meet disinfection
requirements in waters exhibiting high demands. This study evaluated the use of ferrous
chloride (FeCl<sub>2</sub>) to significantly reduce ClO<sub>2</sub><sup>-</sup> levels following treatment with high doses of
ClO<sub>2</sub>. In addition, the effect of FeCl<sub>2</sub> alone and in combination with ferric chloride as an
alternative coagulant on overall coagulation-filtration treatment process performance was studied
at a 5.5-mgd demonstration-scale plant. Data were developed to enable a balancing of
disinfection, disinfection byproduct formation, and filtration requirements at full-scale facilities. Includes 15 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 380 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 06/17/2004 |
