微生物在硫酸盐压力下的反应在基于硫的自性脱系统中
Yiqiang Chen1,2, Xu Jiang3, Juanjuan Zhao4
1Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, Jiangsu Environmental Engineering Technology Co., Ltd, Jiangsu Environmental Protection Group Co., Ltd., Nanjing, China.
Frontiers in microbiology
|June 19, 2025
概括
基于硫的自性脱过器对高硫酸盐盐度有很强的耐受性. 像Thiobacillus这样的关键细菌壮成长,确保全球的废水处理性能稳定.
科学领域:
- 环境微生物学环境微生物学
- 废水处理工程 废水处理工程
背景情况:
- 基于硫的自性脱过器 (SADF) 对于废水中的去除至关重要.
- 了解微生物对硫酸盐盐度等环境压力因素的反应对于优化SADF性能至关重要.
研究的目的:
- 调查硫酸盐盐度迅速增加对SADF细菌群落和代谢功能的影响.
- 确定在高盐度条件下占主导地位的微生物参与者及其相互作用.
主要方法:
- 在30天内,SADF系统暴露于硫酸盐盐度上升 (0.04%至1.2%) 的情况.
- 使用元基因组测序分析细菌社区结构和功能基因丰度.
- 对已识别的微生物进行全球分布分析.
主要成果:
- SADF系统表现出强大的耐硫酸盐盐度应激能力,特别是在低酸盐水平下.
- 在1.2%的硫酸盐度下,*Thiobacillus*属成为主导性 (63.79%的丰度),作为一个关键的硫氧化剂.
- 高盐度和低液压保留时间 (HRT) 调高了和硫代谢基因,显示出正路径相关性.
- 鉴定到的微生物在全球分布广泛,表明它们具有广泛的适用性.
结论:
- SADF系统能够抵御硫酸盐盐度的快速增加,保持脱效率.
- 菌在高盐度下对硫的氧化起着至关重要的作用.
- 在SADF系统中的微生物群落具有适应性和硫循环的代谢途径,对废水处理具有全球意义.
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