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城市废水通过生物电化学系统的氧化:注射剂在多大程度上重要?
Valentin Larzillière1, Florence de Fouchécour2, Chrystelle Bureau2
1SUEZ, Centre International de Recherche Sur l'Eau et l'Environnement (CIRSEE), 78230 Le Pecq, France.
Bioelectrochemistry (Amsterdam, Netherlands)
|September 22, 2023
概括
接种策略不会影响生物电化学系统中的长期废水处理. 使用废水作为基板和注射剂对于较大的反应堆是最方便的,因为其他方法的短期影响.
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:
- 生物电化学系统 (BES) 为废水处理提供了传统活性污泥的可持续替代方案.
- 然而,BES技术需要进一步开发,以便广泛应用,特别是在操作策略方面.
研究的目的:
- 评估不同注射策略对处理真正城市废水的生物电化学系统性能的长期影响.
- 分析注射对生物膜组装动态和微生物社区结构的影响.
主要方法:
- 在六个连续批次的实验室级生物电化学反应堆中,测试了四种不同的注射策略.
- 作为基质,使用了初级澄清器废水,并监测了工艺性能 (coulombic效率,COD去除) 和微生物组成.
主要成果:
- 经过三批接种,没有观察到注射策略对电化学或治疗性能的长期显著影响.
- 在所有策略中,库伦比效率达到88.0 ± 3.9%,COD去除平均为30.8 ± 3.9%.
- 微生物社区分析显示了趋同,表明选择是主要的生物膜组装过程.
结论:
- 接种策略对废水处理的生物电化学系统性能只有短期的影响.
- 为了扩大生物电化学反应器的规模,利用废水作为基板和注射剂是最实用的方法.
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