低强度废水处理的无氧氨氧化生物膜工艺的快速启动策略和微生物种群演变
Fangjian Liu1, Hui Xu2, Yunling Shen1
1State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
Bioresource technology
|December 13, 2023
概括
本研究介绍了用于低强度废水处理中的anammox生物膜工艺的快速启动策略. 在高负载率下丰富亚纳摩克斯细菌 (AnAOB) 加快了工艺启动,并确保了高效的去除.
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
- 生物地质化学循环的过程
背景情况:
- 在低强度废水处理中丰富亚纳摩克斯细菌 (AnAOB) 是一个挑战.
- 无氧氨氧化 (anammox) 过程对于去除至关重要.
- 需要快速启动的方法来克服AnAOB缩的局限性.
研究的目的:
- 提出和评估一项战略,以快速启动anammox生物膜工艺.
- 在快速启动后调查anammox过程的长期稳定性.
- 了解微生物社区动态和低强度废水中的代谢合.
主要方法:
- 在高负载率 (NLR) 上缩AnAOB.
- 在低NLR (0.2-0.4 kg N/(m3·d)) 时对anammox生物膜工艺的长期运行和评估.
- 对去除效率和微生物群落组成的分析.
主要成果:
- 在低NLR的0.2kg N/{m3·d}下,达到高达75%的去除效率.
- 部分脱细菌 (PDB) 和AnAOB之间的代谢合已被证明,由低强度有机物促进.
- 确定了Candidatus Brocadia (AnAOB) 和Limnobacter (PDB) 的共存,以有效地去除.
结论:
- 一个高NLR缩策略能够快速启动用于低强度废水的anammox生物膜工艺.
- 在低NLR条件下,anammox生物膜工艺证明了长期稳定性和效率.
- 代谢合和特定的微生物联盟是成功去除的关键.
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