铁性活性碳酸盐用于控制下水道沉积物中的硫化物和甲生产
Hong-Xu Bao1, Wan-Xin Yin1, Shuai Liu2
1College of the Environment, Liaoning University, Shenyang 110036, China.
Bioresource technology
|June 17, 2025
概括
这项研究引入了一种新的氧化过程,通过向微生物来减少甲和硫化下水道气体. 该方法显著减少了气体生产,改善了废水处理,提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 下水道气体生产,主要是甲 (CH4) 和硫化 (H2S),是由无氧沉积物中的微生物活动驱动的.
- 有效控制这些气体对于公共卫生和基础设施完整性至关重要.
研究的目的:
- 为了研究一种新的铁性活性碳酸盐高级氧化工艺,用于抑制下水道中CH4和H2S的产生.
- 评估这一过程对下水道沉积物中的微生物群落和酶活动的影响.
主要方法:
- 在下水道沉积物的顶层 (0-2厘米) 应用铁活性碳酸盐高级氧化工艺.
- 在处理前和处理后测量CH4和H2S生产率.
- 使用分子技术分析微生物社区结构.
- 检测与气体生产和有机物转化有关的细胞内酶活动.
主要成果:
- 在CH4 (74.8±4.3%) 和H2S (60.5±2.5%) 产量方面实现了显著的减少.
- 生成的自由基 (O2-, OH, CO32-) 破坏了微生物细胞完整性和酶系统.
- 观察到增强的水解酶活性和抑制CH4和H2S生产途径中的关键酶.
- 微生物分析显示,硫酸盐降解细菌和甲原菌的数量有所减少,而水解酸性细菌的数量有所增加.
结论:
- 拟议的氧化过程是控制下水道气体排放的有效策略.
- 该过程增强了有机物质的保留和转化,改善了整体废水处理性能.
- 这种可持续的,以氧化为基础的方法提供了综合的下水道气体控制和更好的废水系统功能.
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