在下水道中控制硫化物的生物策略:通过氧化硫的细菌去除硫化物
Xin Yuan1, Yiquan Sun2, Dong Ni3
1State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; Research Institute of Highway Ministry of Transport, Beijing 100088, China.
Journal of environmental management
|October 13, 2023
概括
这项研究致富于硫氧化细菌 (SOB),使用陶来控制下水道硫化物. 生物硫氧化策略有效降低了硫化的85.1%.
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
- 生物技术是生物技术.
背景情况:
- 下水道中的硫化物由于其毒性和腐蚀性,对公共卫生和基础设施构成重大风险.
- 迫切需要有效和可持续的气体硫化物控制在下水道系统的战略.
研究的目的:
- 开发一种环保的方法来控制下水道中的气体硫化物.
- 为了丰富和固定本地硫氧化细菌 (SOB) 进行实际应用.
- 为了评估生物硫氧化在实验室规模的下水道反应堆中的效率.
主要方法:
- 使用陶作为生物载体从下水道沉积物中丰富本土SOB.
- 使用16S rRNA基因测序识别微生物群落.
- 在不同适应阶段进行代谢途径分析.
- 在实验室规模的下水道反应器中进行持续的实验,以评估硫化物清除效率.
主要成果:
- 成功丰富了一个由Thiobacillus,Pseudomonas和Alcaligenes (64.7%) 主导的SOB联盟.
- 通过固定SOB,证明了硫酸盐和硫化物的转化为元素硫.
- 实现了高效的硫化减少:高硫负载下43.9%,低硫负载下85.1%.
结论:
- 该研究提出了一个有希望的生物硫氧化策略,用于有效控制下水道硫化物.
- 在陶生物载体上固定SOB为减轻下水道系统中硫化物相关问题的可持续解决方案.
- 这种方法突出了利用微生物群落在废水基础设施中的环境修复的潜力.
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