长期储存后使用批量和连续反应器的组合有效地重新激活anammox污泥
Paula Yumi Takeda1, Carolina Tavares Paula2, Guilherme Lelis Giglio2
1Biological Processes Laboratory (LPB), São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. João Dagnone, 1100, Santa Angelina, São Carlos, São Paulo, 13563-120, Brazil. pytakeda@usp.br.
Environmental science and pollution research international
|December 8, 2023
概括
长期储存的阿纳莫克斯污泥 (SAS) 可以有效地重新启动阿纳莫克斯反应堆. 一种组合的批量和连续流量方法成功地重新激活了SAS,减少了反应堆启动时间.
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
- 生物反应器技术技术
背景情况:
- 亚纳莫克斯细菌的生长速度很慢,因此需要丰富的污泥来快速启动反应堆.
- 长期储存的阿纳莫克斯污泥 (SAS) 作为加速反应堆启动的注射剂的有效性仍然不清楚.
研究的目的:
- 调查长期SAS的重新激活潜力.
- 开发一个有效的协议,以减少使用SAS的anammox反应堆的启动时间.
主要方法:
- 直接将SAS应用于上游污泥床 (USB) 反应堆 (第一阶段).
- 批量运行,然后在USB反应器中连续运行 (第二阶段).
- 监测anammox活动,去除率和细菌丰富度.
主要成果:
- 储存的阿纳莫克斯污泥 (13个月) 保持了可检测的特定阿纳莫克斯活性.
- 在USB反应堆中直接应用显示生物质重新激活没有成功.
- 一个结合的批量和连续流策略有效地重新激活了SAS.
- 在75天内实现稳定的1.3g N/L/day的去除率和84.1%的效率.
- 亚纳莫克斯细菌 (Ca. 布罗卡迪亚 (Brocadia) 的丰度在重新激活后达到了37.8%.
结论:
- 长期储存的阿纳莫克斯污泥是可行的注射剂来源.
- 组合批量和连续流量料策略对于SAS重新激活是有效的.
- 这种方法显著缩短了高速主流anammox反应堆的启动期.
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