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Journal AWWA - DBP Formation During Chlorination and Chloramination: Effect of Reaction Time, pH, Dosage, and Temperature AWWA期刊-氯化和氯胺化过程中DBP的形成:反应时间、pH值、剂量和温度的影响
发布日期: 2008-08-01
有机卤素占总有机卤素的很大一部分 饮用水中的(TOX)不能由 已知特定消毒副产物(DBPs)。广阔的 已经进行了一些研究来调查这些因素 影响三卤甲烷的形成和 卤乙酸是两类受调节的DBP。 然而,另一方的形成和控制, 身份不明的卤化DBP,可能 潜在的健康风险尚未得到很好的研究。 这项研究评估了反应的时间效应, pH值、用量和温度对形成 氯化和氯胺化过程中未知的TOX(UTOX)。 结果表明,形成 随着氯化作用的进行,未知DBPs显著降低 或氯胺化pH值升高。更大程度地转换 UTOX可测量的副产品与 增加反应时间、pH值、剂量和温度 在氯化过程中。UTOX与TOX的比率 随着反应时间的延长而增加,但随着pH值的升高而降低 氯胺化过程中的剂量。 研究结果可以帮助供水商更好地控制污染 未知DBP的形成以及调节 DBPs,从而降低与卤代烃相关的健康风险 饮用水中的DBPs。包括31个参考文献、表格、图表。
A significant fraction of the total organic halogen (TOX) in drinking water cannot be accounted for by known specific disinfection byproducts (DBPs). Extensive studies have been conducted to investigate factors affecting the formation of trihalomethanes and haloacetic acids, the two groups of regulated DBPs. However, the formation and control of the other, unidentified halogenated DBPs, which may have potential health risks, have not been well studied. This research evaluated the effect of reaction time, pH, dosage, and temperature on the formation of unknown TOX (UTOX) during chlorination and chloramination. Results showed that the formation of unknown DBPs significantly decreased as chlorination or chloramination pH increased. Greater conversion of UTOX to measurable byproducts occurred with increasing reaction time, pH, dosage, and temperature during chlorination. The UTOX-to-TOX ratio increased with reaction time but decreased with pH and dosage during chloramination. Study results can help water suppliers better control the formation of unknown DBPs as well as regulated DBPs, thus reducing health risks associated with halogenated DBPs in drinking water. Includes 31 references, table, figures.
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发布单位或类别: 美国-美国给水工程协会
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