生物气化接触器的深度概况:描述处理减少污染物的微生物活动
Asher E Keithley1, Vicente Gomez-Alvarez1, Daniel Williams1
1U.S. Environmental Protection Agency, ORD, CESER, WID, Cincinnati, OH 45268, United States.
Journal of water process engineering
|February 15, 2024
概括
这项研究研究了地下水处理气化接触器中的微生物活性. 微生物群落和活动随着深度的变化而变化,因反应堆条件而不同于典型的地下水生物过器.
科学领域:
- 环境微生物学环境微生物学
- 水处理技术水处理技术.
- 生物地质化学生物地质化学
背景情况:
- 生物处理有效地从地下水中去除了氨,铁,,,甲和甲等减少的污染物.
- 了解空气接触器中的微生物活动深度概况对于优化处理效率至关重要.
- 现有的研究缺乏这些系统中的微生物过程的详细描述.
研究的目的:
- 描述用于地下水处理的空气接触器深度内的微生物活动和社区组成.
- 为了比较石和陶包装介质之间的微生物概况.
- 研究介质金属度与生物膜参数之间的关系.
主要方法:
- 一项为期一年的试点研究,比较气化接触器中的石和陶介质.
- 收集各种深度和多种水系统的介质和水样.
- 分析水质,介质表面金属,腺三酸盐 (ATP),细胞外聚合物物质 (EPS),细胞外酶活动和微生物社区组成 (功能基因).
主要成果:
- 介质金属度在影响时最高,但ATP,EPS和酶活动与深度一致.
- 细菌和用于污染物氧化的功能基因随着深度的增加而减少,但与媒体金属度没有相关性.
- 微生物群落的组成随着深度的变化而变化,多样性要么减少,要么保持稳定.
结论:
- 空气接触器中的微生物活动概况与传统的地下水生物过器不同.
- 反应器的流量和溶解氧的形状显著影响微生物群落的结构和功能.
- 需要进一步的研究,以充分阐明这些因素对治疗绩效的影响.
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