基于铁铁和酸的混合型部分脱:性能,微生物群落和潜在的机制
Shengqi Ye1, Peilun Kang1, Zebin Chen1
1Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
Bioresource technology
|December 21, 2025
概括
这项研究展示了一种成本效益高的混合性部分脱 (MPD) 系统,使用铁和酸盐. 该MPD方法有效地生产酸盐用于无氧氨氧化 (ANAMMOX),同时降低运营费用.
科学领域:
- 环境工程 环境工程
- 微生物生态学 微生物生态学
- 水处理 处理水的方法
背景情况:
- 无氧氨氧化 (ANAMMOX) 需要化物供应.
- 部分脱 (PD) 是生产亚酸盐的常见方法.
- 优化PD以实现成本效益和稳定性对于去除至关重要.
研究的目的:
- 评估使用铁和酸作为共同电子捐赠体的混合型部分脱 (MPD) 系统.
- 评估不同自性与异性 (A/H) 比率对酸盐积累和微生物群体的影响.
- 为了确定MPD系统的成本效益和运行稳定性,与纯粹异质型PD相比.
主要方法:
- 在三个不同的A/H比率 (0.07,0.21,0.85) 上运行MPD系统.
- 使用的铁 (Fe ((II)) 和酸作为共同电子捐赠者.
- 分析了酸盐积累率 (NAR) 和微生物群落组成.
主要成果:
- 在测试的A/H比率中实现了稳定的78.0%,70.8%和59.6%的NAR.
- 观察到自营贡献从21.8%增加到76.1%,A/H.增加.
- 鉴定了关键的脱物种 (Thauera, Longilinea, Thermomonas) 和缓解作用的细菌 (Anaeromyxobacter, Petrimonas).
结论:
- 以Fe (II) 和乙酸为驱动的MPD系统是一种具有成本效益 (22.8%的成本降低) 和稳定的化物生产策略.
- MPD提供了一种强大的解决方案,用于向下游ANAMMOX工艺供应酸盐.
- 这种方法提高了废水处理中的去除效率.
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