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来自废水处理厂的潜在致病微生物的生物气溶化行为:发生概况,社会功能和健康风险

Nana Zang¹, Hongyu Tian², Xinyue Kang¹

¹Beijing University of Civil Engineering and Architecture, Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing 100044, China; Beijing University of Civil Engineering and Architecture, Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing 100044, China.

The Science of the total environment

|February 29, 2024

概括

污水处理厂释放出致病性生物气溶. 面具有效地减少了来自黄金菌生物气溶的健康风险,为暴露控制提供了基础.

科学领域:

环境微生物学环境微生物学
公共卫生公共卫生
职业安全职业安全职业安全

背景情况:

污水处理厂 (WWTP) 是致病性生物气溶的重要来源,对健康构成风险.
从废水迁移到大气中的潜在致病微生物 (PPM) 的行为尚未得到充分了解.

研究的目的:

调查废水,污泥和生物气溶中PPM的发生情况.
分析生物气溶水平,影响因素和健康风险.
评估N90,N95和医疗口罩对黄金葡萄球菌生物气溶的疗效.

主要方法:

在两个WWTP的废水,污泥和生物气溶样本中的量化PPM.
计算了生物气溶解指数 (BI) 和分析了环境影响因素.
评估健康风险,包括疾病负担 (DB) 和年度感染概率 (Py).
用不同类型的面具模拟暴露场景.

主要成果:

在生物气溶中确定了38个和64个PPM;Streptomyces和Acinetobacter显示出高的生物气溶.
湿度,风速和温度等环境因素影响了BI和PPM的组成.
黄金葡萄球菌生物气溶排放达到很高的水平 (高达980CFU/m3).
DB和Py超过了基准值,但所有测试的口罩都将这些值减少了至少一个数量级.

结论:

污水处理厂排放大量的致病性生物气溶.
面具可以有效地保护人们免受Staphylococcus aureus生物气溶暴露.
这些发现为管理WWTP环境中的暴露风险提供了科学基础.

关键词:

生物气溶是一种生物气溶.生物气溶化指数潜在的致病性微生物定量微生物风险评估定量微生物风险评估黄金葡萄球菌黄金葡萄球菌

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