通过部分化-脱加上 anammox 在步进料连续系统中,先进的从城市废水中去除
Xiaohang Hou1, Xiyao Li1, Xiaorong Zhu2
1National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China.
Bioresource technology
|November 3, 2023
概括
这项研究通过循环养无氧/有氧 (A/O) 工艺增强了从低碳废水中去除的方法. 合并的部分化-脱/anammox (PN-PD/A) 工艺实现了85.6%的去除效率.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 废水处理 废水处理
背景情况:
- 低碳/低 (C/N) 的城市废水对传统的除提出了挑战.
- 组合部分化-脱/anammox (PN-PD/A) 工艺对于高效的去除具有前景.
- 为治疗低C/N废水而优化对anammox细菌的条件至关重要.
研究的目的:
- 为了研究一个循序渐进的无氧/有氧 (A/O) 工艺的有效性,以从低C/N的城市废水中去除.
- 为了评估组合的部分化-anammox (PN/A) 和部分化-anammox (PD/A) 过程.
- 评估生物载体对anammox细菌丰富度和去除的影响.
主要方法:
- 实现一个步进的A/O流程,集成PN/A和PD/A.
- 在2.8.8的低C/N比率下运行.
- 将生物载体添加到无氧和有氧室中.
- 监测去除效率和anammox细菌的丰富性.
主要成果:
- 在C/N比率为2.8.8的情况下,实现了85.6%的去除效率.
- 在无氧室中,阿纳莫克斯的贡献为36.4%,在氧室中为8.8%.
- 生物载体在生物膜中增加了anammox细菌的相对丰度,从0.61%增加到1.51% (无毒) 和1.02% (有毒).
结论:
- 步进料A/O工艺有效地从低C/N的城市废水中去除.
- 这一过程为anammox细菌生长创造了有利的条件.
- 这些发现支持PN-PD/A工艺的应用,用于城市废水处理中的先进的除.
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