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Abstract：
Microplastic (MP) pollution has received widespread attention; however, its occurrence and distribution in water supply systems, particularly in pipe scales, remains unclear. In this study, MPs were observed in water and pipe scale samples from the drinking water treatment plant (DWTP) and distribution system (DWDS), respectively. The MP concentrations ranged from 13.23 to 134.79 n/L and 569.99 to 751.73 n/kg in the water and pipe scale samples, respectively. The predominant particles in the pipe scales (50-100 μm) were smaller than those in the water samples (> 200 μm). Overall, MP fragments were the most abundant. Of all the identified MPs, nylon and polyvinyl chloride were predominant in the water and pipe scale samples, respectively. Furthermore, the DWTP and DWDS both prevented MPs from entering the tap water, thereby reducing their risk. The results of this study provide direct evidence for the strong adsorption of MPs onto pipe scales, indicating that pipe scale stability may play a role in improving water quality and security. However, the abundance of MPs in pipe scales cannot be ignored. Additionally, the results provide valuable background information on MP pollution in water supply systems.
摘要：
微塑料(MP)污染已受到广泛关注;然而,它在供水系统中的出现和分布，特别是在管道秤中，尚不清楚。在这项研究中,在饮用水处理厂（DWTP）和分配系统（DWDS）的水和管道规模样品中观察到MPs，分别。水和管道规模样品中的MP浓度范围为13.23至134.79n/L和569.99至751.73n/kg，分别。管垢中的主要颗粒（50-100μm）小于水样中的颗粒（>200μm）。总的来说,MP片段是最丰富的。在所有确定的议员中，尼龙和聚氯乙烯在水和管垢样品中占主导地位，分别。此外，DWTP和DWDS都阻止国会议员进入自来水，从而降低他们的风险。这项研究的结果为MPs在管垢上的强吸附提供了直接证据，表明管道水垢稳定性可能在改善水质和安全性方面发挥作用。然而,管道尺度中议员的丰度不容忽视。此外,结果提供了有关供水系统中MP污染的有价值的背景信息。
