铁III诱导的生产及其在脱过程中的控制策略在脱依赖的无氧甲氧化系统中
Xin Tan1, Wen-Bo Nie2, Kai Luo3
1State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
Journal of environmental management
|July 31, 2025
概括
废水中的铁 (III) 不会影响酸盐的去除,但可以在去化无氧甲氧化 (DAMO) 系统中引起的产生. 避免多余的甲是防止这个问题的关键.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 废水处理工程 废水处理工程
背景情况:
- 脱无氧甲氧化 (DAMO) 对于可持续的废水处理至关重要,因为它利用甲去除.
- 铁 (III) 在废水中很常见,并且已知会影响DAMO古生物中的代谢.
- 铁III对DAMO系统性能和微生物群落的长期影响尚不清楚.
研究的目的:
- 研究Fe(III) 对DAMO系统中去除效率和微生物群落结构的长期影响.
- 确定Fe(III) 影响代谢和甲消耗的条件.
- 评估Fe (III) 诱导的生产对整体废水处理过程的影响.
主要方法:
- 使用膜颗粒污泥反应器 (MGSR) 模拟DAMO过程在Fe (III) 的影响下.
- 在长时间的运行期间,监测了除率,产量和甲消耗.
- 使用分子技术分析微生物社区结构,追踪DAMO古菌,DAMO细菌和anammox细菌的变化.
主要成果:
- 铁没有影响酸盐去除率,但诱导了连续的生产 (13.7%的酸盐被去除).
- 氨生产发生在甲过剩和没有残留酸盐的条件下.
- 在微生物群体中,DAMO古菌占主导地位,而DAMO细菌减少,无氧氨氧化 (anammox) 细菌增加,导致多样化的去除.
结论:
- 铁 (Fe) 可以导致DAMO系统的意外生成,将甲消耗量增加41.7%,并影响技术经济.
- 管理多余的甲是一种减轻Fe (III) 诱导的生产的潜在策略.
- 依赖DAMO的废水处理技术需要仔细考虑Fe (III) 的存在,以防止运行效率低下.
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