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Implementationof the U.S.Safe Drinking water act amendments of 1986: their impacts on the use of ozone for drinking water treatment in the United States: 1991 Update

机译:1986年《美国安全饮用水法》修正案的实施:它们对美国在饮用水处理中使用臭氧的影响:1991年更新

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Under the Safe Drinking Water Act Amendments of 1986, the U.S.Environmental Protection Agency requires removal/inactivation (=primary disinfection) of Giardia cysts, viruses, and Legionella bacteria in addition to standard plate count and coliform organisms. EPA also is regulating many organic impurities, currently classified as volatile organics chemicals (VOCs), synthetic organic chemicals (SOCs), and (primarily halogenated) disinfection byproducts (DBPs), and is planning to regulate many more by 1995. Ozone currently enjoys the status of being the sole primary disinfectant capable of inactivating Giardia cysts (also Cryptosporidium cysts), viruses, and bacteria (lowest CT wvalue), without generating halogenated byproducts (except when the water contains significant levels of bromide ions). Biofiltration, then chloramine, chlorine, or possibly chlrine dioxide would follow ozonation for secondary (residual) disinfection.
机译:根据1986年的《安全饮用水法》修正案,除了标准的盘数和大肠菌群菌外,美国环境保护局还要求对贾第虫囊肿,病毒和军团菌进行清除/灭活(=初次消毒)。 EPA还对许多有机杂质进行了管制,目前将其归类为挥发性有机化学品(VOC),合成有机化学品(SOC)和(主要是卤化的)消毒副产物(DBP),并计划在1995年之前对更多的有机杂质进行管制。是唯一能够灭活贾第虫囊肿(也包括隐孢子虫囊肿),病毒和细菌(CT wvalue最低)而不会产生卤化副产物的唯一消毒剂(除非水中含有大量溴离子)。在进行臭氧化处理之后,进行生物过滤,然后再进行氯胺,氯或可能的二氧化氯消毒,然后进行二次(残留)消毒。

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