在污泥消化过程中,应用电压对古生物微生物分布的反应
Yingying Cai1, Heng Li2, Guangfei Qu1
1Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China; National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, Yunnan, China.
Chemosphere
|July 26, 2023
概括
电力辅助无氧消化 (EAAD) 对污泥处理产生影响. 高电压抑制了甲的产生,改变了考古社区,为优化EAAD技术提供了洞察力.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 电化学 电化学 电化学
背景情况:
- 城市化增加了家庭用水量,导致在污水处理过程中产生更多的过剩污泥 (SS).
- 高效利用SS的资源对于可持续的废水管理至关重要.
研究的目的:
- 调查电力辅助无氧消化 (EAAD) 对污泥消化和气体生产的影响.
- 探索应用电压对在电极附近的考古社区分布的影响.
- 了解EAAD系统中的电压依赖反应.
主要方法:
- 使用电力辅助无氧消化 (EAAD) 系统.
- 分析消化的成分和气体的产生 (CH4,CO2).
- 使用分子技术在不同应用电压下检查考古社区的分布.
主要成果:
- 应用于超过3.0V的电压最初阻碍了CH4的产生,同时刺激了CO2. 进一步增加的电压阻碍了CH4和CO2的生产.
- 增加的电压显著降低了关键甲原体 (甲微生物,甲酸,甲沙) 的丰度,影响了沼气CH4含量.
- 过高的电压停止了无氧消化 (AD) 过程,并使微生物菌群失活.
- 考古社区分布在阳极和阴极区域之间有所不同,并且随着电压强度的增加而变得更加明显.
结论:
- 应用电压强度是影响EAAD性能和微生物社区结构的关键因素.
- 优化电压对于平衡EAAD系统中的沼气生产和微生物活动至关重要.
- 在电极附近的考古社区的独特空间分布为推进EAAD技术提供了基础.
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