通过基于Feammox的自营转化实现了高水平的去除
Xiaohui Cheng1, Lanlan Hu1, Tao Liu2
1Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
Water research X
|December 26, 2024
概括
无氧氨氧化加上Fe(III) 减少 (Feammox) 有效地从废水中去除. 这项研究表明Feammox可以在实验室生物反应器中实现高清除速率,提供可持续的自营清除选项.
科学领域:
- 环境微生物学 环境微生物学
- 地质化学 地质化学
- 废水处理工程 废水处理工程
背景情况:
- 无氧氨氧化加上Fe(III) 减少 (Feammox) 是一个关键的生态化学过程.
- 在各种生态系统中,Feammox在和铁循环中发挥着重要作用.
研究的目的:
- 调查Feammox在连续上流生物反应器中对自身移除的疗效.
- 评估Feammox与间歇性Fe(OH) 3添加在低度和没有有机碳的合成废水中的性能.
主要方法:
- 一个连续的实验室上流生物反应器的运行,间歇性添加Fe(OH) 3.
- 对氨和总去除效率和速度的分析.
- 估计Fe(III) 需要去除氨的需求.
- 无生物和生物批量试验用于研究Fe(II) 与各种氧化剂 (O2,NO2-,NO3-) 的氧化.
主要成果:
- 在四个月内实现了高氨 (∼97%) 和总 (∼90%) 清除效率.
- 已经证明,实际的去除率为50毫克N/L·d).
- 估计的Fe(III) 需求明显低于理论预测,这表明有效的Fe(III) 再生.
- 确定微生物酸盐减少和化学氧气减少是Fe (III) 再生的关键过程.
结论:
- 基于Feammox的自转化是一种可行的,高效的废水处理方法.
- 间歇的Fe(III) 添加和有效的Fe(III) 再生对于持续的Feammox性能至关重要.
- 这一过程为废水处理厂的可持续除提供了一个有希望的替代方案.
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