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Journal AWWA - Metaphosphate Reversion in Laboratory and Pipe-Rig Experiments AWWA期刊-实验室和管道钻机实验中的偏磷酸盐回复
发布日期: 2003-04-01
根据这项研究,这是一项更大规模研究的一部分 偏磷酸盐对铅和铜溶解度的影响 在管道系统中,偏磷酸盐还原更多 在家庭管道系统中比在配电系统中更快。 因此,如果公用事业管理者添加偏磷酸盐抑制剂 对于饮用水,他们应该从两个地方采集样本 分销系统和消费者的水龙头,以获得一个真实的画面 在他们的特定系统中。一些腐蚀、水垢和红色水 抑制剂含有偏磷酸盐,它会慢慢恢复为 正磷酸盐,进而可能影响抑制剂的有效性。 这种逆转在硬水中比在软水中发生得更快 水在老化的管道中流动比在玻璃烧杯中快得多。 这项研究将影响腐蚀控制工作,目前正在进行中 由公共卫生和监管问题推动。许多法规遵从性 这些项目包括从配电系统取样,以及 消费者的水龙头。偏磷酸盐回复的表观程度 消费者点击时可能与分销时有很大不同 系统包括26个参考文献、表格和图表。
According to this research, which was part of a larger study on the effects of metaphosphate on lead and copper solubility in plumbing systems, metaphosphate reverts more rapidly in household plumbing systems than in distribution systems. Therefore, if utility managers add metaphosphate inhibitors to drinking water, they should collect samples from both the distribution system and from consumers' taps to get a true picture in their specific system. Some corrosion, scale, and red water inhibitors contain metaphosphate, which slowly reverts to orthophosphate, in turn possibly affecting an inhibitor's effectiveness. This reversion occurs more rapidly in hard water than in soft water and is much more rapid in aged pipe than in a glass beaker. This research will affect corrosion control efforts, which are in turn driven by public health and regulatory issues. Many compliance programs involve sampling from a distribution system and consumers' taps. The apparent degree of metaphosphate reversion may be very different at a consumer's tap than in the distribution system. Includes 26 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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