通过发电碳酸铁碳酸盐提高主流无氧废水处理
Ruoyao Yuan1, Zhetai Hu1, Tao Liu2
1Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.
Environmental science & technology
|November 12, 2025
概括
铁碳酸盐添加到无氧废水处理中显著减少了硫化物和酸盐,改善了生物气质量和有机捕获. 这种FeCO3循环为增强的废水处理过程提供了可持续的解决方案.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 生物技术是生物技术.
背景情况:
- 无氧废水处理提供了能源效益,但由于硫化物,它在营养物质的去除和生物气质量方面遇到了困难.
- 现场碳酸铁 (FeCO3) 生产是一种解决这些局限性的新策略.
研究的目的:
- 为了研究铁碳酸盐 (FeCO3) 剂量对上游无氧污泥毯 (UASB) 反应堆性能的影响.
- 为了评估FeCO3在硫化物和酸盐去除和沼气升级方面的有效性.
主要方法:
- 在UASB反应堆中以40,60和100毫克Fe/L的剂量注入铁碳酸盐 (FeCO3).
- 监测溶解的硫化物,硫化 (H2S) 和酸盐水平.
- 使用X射线衍射分析污泥成分.
主要成果:
- 硫化物水平降低了97%以上,控制H2S到100 ppmv.
- 酸盐去除是显著的,最高剂量将其从5.0降低到2.5 mg P/L.
- FeCO3剂量增强了有机捕获,并保留了硫化物/酸盐作为FeS和Fe3 (PO4) 2.
结论:
- 铁碳酸盐 (FeCO3) 是一个有前途的添加剂,可以提高无氧废水处理效率.
- 铁CO3循环策略提高了营养物质的去除,生物气质量和有机捕获,提供了回收潜力.
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