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经过处理的废水扰乱了微塑料在接收流域的分布

Liyan Deng¹, Yue Yuan², Hongbo Xi²

¹State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Research Center of Environmental Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Water Sciences, Beijing Normal University, Beijing, 100875, China.

Journal of environmental management

|January 11, 2025

概括

经过处理的废水对水生环境中的微塑料分布有重大影响. 工业和城市工厂都会释放微塑料,增加下游的度,改变河流和沉积物中的微塑料类型.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
水的质量水的质量

背景情况:

微塑料 (MP) 是水生生态系统中普遍存在的污染物,对水生生物构成风险.
废水处理厂 (WWTP) 被认为是MP的来源和沉积点,但它们对接收水的影响的直接证据有限.

研究的目的:

调查石油化工厂 (PWWTP) 和市政工厂 (MWWTP) 处理的废水对河水和沉积物中微塑料的分布和特征的影响.
确定与废水排放相关的微塑料污染的排放节点和热点.

主要方法:

在PWWTP和MWWTP的上游和下游收集和分析地表河水和沉积物样本.
收集样本中的微塑料的量化和表征.

主要成果:

来自PWWTP的废水和MWWTP出水口附近的水显示了高MP度 (分别为1280和723项/L).
下游样本中的MP丰度始终超过PWWTP和MWWTP的上游水平.
石油化工废水排放增加了MP多样性,而市政废水排放增加了窄MP和下游纤维的比例.

结论:

经过处理的废水对接收流域中的微塑料的分布和特征产生重大影响.
水中塑料作为微塑料的关键排放点,影响下游水生环境.

关键词:

水生环境水生环境排放节点是一个排放节点.热点热点的地方微塑料是一种微塑料.处理废水的处理废水废水处理厂的废水处理厂.

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