污泥处理过程中产生的生物气溶:细菌和真菌变异特征,来源追踪和风险评估
Yanjie Wang1, Yang Liu1, Kai Yang1
1School of Public Health, Zhengzhou University, Zhengzhou 450001, PR China.
The Science of the total environment
|August 11, 2023
概括
来自废水污泥处理的生物气溶存在传染病风险. 污泥是空气传播细菌和真菌的主要来源,在无氧沉积中发现了潜在的致病性,需要采取更严格的控制措施.
科学领域:
- 环境微生物学环境微生物学
- 公共卫生 公共卫生
- 废水工程 废水工程
背景情况:
- 来自废水处理厂 (WWTP) 的生物气溶可以传播传染病原体.
- 了解生物气溶的产生,来源和风险对于公共卫生至关重要.
- 污泥处理过程是空气中微生物的重要来源.
研究的目的:
- 调查污泥处理过程中生物气溶的特性,来源和风险.
- 在生物气溶中识别占主导地位的微生物群落和潜在的病原体.
- 评估与WWTP生物气溶相关的健康风险.
主要方法:
- 总悬浮颗粒和水溶性离子的监测.
- 使用CFU计数量测量细菌和真菌度的量化.
- 使用主要成分分析和源追踪器进行微生物社区分析.
- 健康风险评估,包括非致癌风险评估和Bugbase表型预测.
主要成果:
- 生物气溶度在49 ± 3到354 ± 10μg/m3之间.
- 主导细菌包括 Bacteroides 和 Lactobacillus; 主导真菌包括 Aspergillus 和 Fusarium.
- 污泥被确定为空气中的细菌和真菌的主要来源,在特定的处理阶段.
- 非致癌风险一般较低,但在无氧沉积生物气溶中发现了潜在的致病性.
结论:
- 泥是WWTP中的生物气溶的重要来源.
- 虽然整体非致癌风险很低,但特定的生物气溶可能会引起健康问题.
- 建议在污泥处理过程中加强生物气溶的管理和控制.
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