在anammox工艺中可持续的生物炭应用:为增强的去除和低温高效启动揭示了新的途径
Biao Yang1, Jiawei Sun1, Zhongyu Wang1
1School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China.
Bioresource technology
|May 3, 2024
概括
添加生物炭显著加快了低温无氧氧化 (anammox) 反应堆的启动. 这种生物炭的应用提高了去除效率,并增强了用于可持续废水处理的anammox细菌种群.
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:
- 无氧氨氧化 (anammox) 对于废水处理中的去除至关重要.
- 建立高效的anammox反应堆,特别是在低温 (15°C ± 1°C) 的情况下,仍然是一个挑战.
研究的目的:
- 为了研究生物炭在低温下加速anammox反应堆启动中的有效性.
- 评估生物炭对去除效率和微生物群落结构的影响.
主要方法:
- 两个anammox反应堆的比较:S1 (含10g/L竹子生物炭) 和S0 (没有生物炭).
- 监测反应堆启动时间,去除效率,细胞外聚合物质 (EPS) 生产,以及超过140天的细菌丰度.
主要成果:
- 在S1中添加生物炭将启动时间缩短到87天,而在S0中则是103天.
- 140天后,在S1中,去除效率增加了10.9%,这与EPS增长了28.9%有关.
- 在S1.中,关键的形细菌 (Candidatus Brocadia和Candidatus Jettenia) 的相对丰度明显高于S1.
结论:
- 生物炭作为一个有利的息地,促进丰富和安纳莫克斯细菌在低温下建立.
- 生物炭的使用提供了一个有前途的策略,以提高 anammox 工艺效率在寒冷的气候.
- 这种方法促进了废水处理中可持续的去除.
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