城市污水处理厂的活性污泥作为潜在的微塑料来源:基于APCS-MLR和PMF受体模型的来源分配
Jiahui Mi1, Junping Lu2, Tingxi Liu3
1Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, China.
Journal of hazardous materials
|January 9, 2026
概括
市政污水处理厂将微塑料 (MP) 释放到环境中. 这项研究调查了活性污泥中的MP,确定了聚和聚烯纤维和碎片作为织和农业来源的关键污染物.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 水处理 处理水的方法
背景情况:
- 市政废水处理厂 (WWTP) 是微塑料 (MP) 释放到自然生态系统的重要途径.
- 活性污泥 (AS) 中的微塑料需要对其特征,运动和来源进行彻底的调查.
研究的目的:
- 探索来自综合污水处理厂的活性污泥中的MPs的发生,迁移机制和气候相关性.
- 在活性污泥中进行MP的可追溯性分析.
主要方法:
- 分析微塑料的特性,包括尺寸和聚合物类型 (聚,聚烯).
- 积极矩阵因子化 (PMF) 和绝对主要组件得分-多重线性回归 (APCS-MLR) 模型的应用用于源分配.
- 调查MP发生与气候因素之间的潜在相关性.
主要成果:
- 在AS中占主导地位的MP形式是小碎片 (0.25-0.50毫米) 和较大的纤维 (1.00-5.00毫米).
- 聚 (PES) 和聚烯 (PP) 被确定为主要的聚合物组件.
- 在PMF模型中,指的是家庭 (15.88%),织品 (48.7%),农业 (21.95%) 和工业 (13.47%) 的来源.
- 在APCS-MLR模型中,混合工业,农业和住宅来源占62.71%,织活动占28.31%.
结论:
- 该研究验证了PMF和APCS-MLR模型在WWTP中微塑料来源分配的有效性.
- 结果为WWTPs在识别主要MP来源方面提供了关键的理论支持和技术指导.
- 了解MP源对于制定有针对性的缓解策略来减少环境污染至关重要.
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