Formation de chloropicrine lors de la chloration de quelques composes organiques nitres en solution aqueuse. Incidence d'une preozonation. Chloropicrin formation during the chlorination of some organic nitro compounds in aqueous solution. Incidence of a preozonation treatment.

This study—s objective was to investigate the effect of ultraviolet (UV) treatment on the subsequent formation of regulated and unregulated disinfection by‐products (DBPs). UV treatment of two sets of waters did not substantially change the waters— tendency to form trihalomethanes, haloacetic acids, or total organic halogen under the conditions of these tests. Evidence was found of small reductions in the formation of these DBPs, but the decreases did not exceed 10%. Formation of chloropicrin and 1,1,1‐trichloropropanone increased as a result of medium‐pressure UV treatment but remained at levels well below those of the regulated DBPs. Low‐pressure UV did not cause any detectable increase in chloropicrin formation. The authors propose that photonitration leads to the formation of new nitroorganics during UV treatment and these form halonitromethanes during subsequent chlorination. It is recommended that the effects of UV treatment on nonregulated DBPs be considered as new UV drinking water systems are brought on line.

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Effect of UV treatment on DBP formation

Reckhow¹,

Linden²,

Kim³

et al. 2010

Journal AWWA

104

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Formation de chloropicrine lors de la chloration de quelques composes organiques nitres en solution aqueuse. Incidence d'une preozonation. Chloropicrin formation during the chlorination of some organic nitro compounds in aqueous solution. Incidence of a preozonation treatment.

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Effect of UV treatment on DBP formation

Effect of UV treatment on DBP formation

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