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Potassium Permanganate/ Ozone Combined Oxidation for Minimizing Bromate in Drinking Water
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In this study, experiments were conducted to make a comparison in bromate formation between KMnO4/O3 combined oxidation and single ozonation. The effect of KMnO4 dosage, temperature, pH and NOM on bromate formation during KMnO4/O3 combined oxidation was investigated. Result shows that, bromate formation is 26% lower during the process of KMnO4/O3 combined oxidation. The optimal KMnO4 dosage is suggested to be 1mg/L considering balance between bromate inhibition and the residual manganese concentration. When KMnO4 dosage was 1.0mg/L, initial bromide concentration was lower than 80 μg/L, and temperature was below 25°C, combined oxidation can make the formation of bromate under the maximum contaminant level of 10 μg/L. Finally, the probable mechanism of the better behavior of KMnO4/O3 combined oxidation was discussed.
Trans Tech Publications, Ltd.
Title: Potassium Permanganate/ Ozone Combined Oxidation for Minimizing Bromate in Drinking Water
Description:
In this study, experiments were conducted to make a comparison in bromate formation between KMnO4/O3 combined oxidation and single ozonation.
The effect of KMnO4 dosage, temperature, pH and NOM on bromate formation during KMnO4/O3 combined oxidation was investigated.
Result shows that, bromate formation is 26% lower during the process of KMnO4/O3 combined oxidation.
The optimal KMnO4 dosage is suggested to be 1mg/L considering balance between bromate inhibition and the residual manganese concentration.
When KMnO4 dosage was 1.
0mg/L, initial bromide concentration was lower than 80 μg/L, and temperature was below 25°C, combined oxidation can make the formation of bromate under the maximum contaminant level of 10 μg/L.
Finally, the probable mechanism of the better behavior of KMnO4/O3 combined oxidation was discussed.
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