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AWWA QTC97108
- Removal of Chlorite Ion Using Sulfite Ion in Natural Waters
- Conference Proceeding by American Water Works Association, 01/01/1997
- Publisher: AWWA
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The use of chlorine dioxide as an alternative disinfectant and for other purposes such as manganese oxidation may be affected by the impending MCL of 1.0 mg/L proposed for chlorite ion under Stage I of the Disinfectant/Disinfection Byproducts (D/DBP) Rule. Treatment facilities which routinely apply chlorine dioxide doses in the range of 1.3-1.5 mg/L or higher may be forced to implement chlorite removal methods to be in compliance with the MCL. This study evaluated the use of sulfite ion for chlorite ion removal in chlorine dioxide treated waters. The effects of pH, sulfite dose and initial chlorite ion concentration were investigated. The effect of sulfite ion on newly-formed manganese oxides was also examined.
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