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废水处理厂中的循环甲基:发生,排放,环境分布和职业暴露

Kaixin Dong¹, Ying Zhou², Junyu Guo²

¹College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.

The Science of the total environment

|August 18, 2024

概括

循环甲基酸盐 (CMS) 主要从废水处理厂 (WWTP) 排放到空气中,其中D5是最常见的. 污水处理技术人员因吸入而面临的职业暴露风险最高.

科学领域:

环境化学环境化学
环境科学环境科学
职业健康职业健康职业健康

背景情况:

循环甲基酸盐 (CMS) 在废水处理厂 (WWTP) 中普遍存在,并构成潜在的环境和健康风险.
了解它们的环境行为和人类暴露对于风险评估至关重要.

研究的目的:

评估CMS (D4-D6) 在北京和昆明的WWTP中的环境命运和人类暴露风险.
确定主要的排放途径,并评估WWTP工作人员的职业暴露水平.

主要方法:

监测CMS在空气,水和污泥中的度,跨越不同的WWTP单位和季节.
量化CMS对空气,土壤和水的排放.
计算每日吸入暴露剂量 (ADDinh,CMSs) 在WWTP中的各种职业角色.

主要成果:

D5在所有矩阵 (空气,水,污泥) 中表现出最高度,季节性变化 (夏季更高).
大气排放占CMS总排放量的98%,其中A2/O单位的空气度较高.
污水处理技术人员的吸入暴露剂量最高 (51μg/kg/天),表明存在重大职业风险.

结论:

大气排放是WWTP中CMS的主要环境命运,特别是D5.
通过吸入的职业暴露对WWTP工人来说是一个重大问题.
结果为改善WWTP流程和CMS的风险管理策略提供了基础.

关键词:

循环甲基西洛酸盐的使用.排放量排放量排放量排放量环境的分布环境的分布吸入暴露的风险吸入暴露的风险废水处理厂废水处理厂

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