不同纳米铁氧化物载荷的碳材料对有氧颗粒型污泥系统的影响
Kai-Peng Deng1, Jun-Guo He1, Wei-Xun Jiang1
1College of Civil and Transportation Engineering, Guangzhou University, Guangzhou, People's Republic of China.
Environmental technology
|April 21, 2025
概括
装有氧化铁的粉末活性炭显著增强了有氧颗粒污泥 (AGS) 系统. 优化剂量加快了污泥的生长,提高了营养物质的去除效率,为废水处理提供了一种新的方法.
科学领域:
- 环境科学与工程环境科学与工程
- 环境生物技术 环境生物技术
- 废水处理技术 废水处理技术
背景情况:
- 有氧颗粒污泥 (AGS) 系统对于高效的废水处理至关重要.
- 提高AGS性能,特别是颗粒和营养物质的去除,仍然是一个关键的挑战.
- 纳米材料有可能改善AGS中的物理化学和微生物过程.
研究的目的:
- 为了研究铁氧化物加载粉状活性炭 (FONP-PAC) 对AGS性能的影响.
- 为了确定最佳的氧化铁负载,以提高污泥颗粒和污染物去除.
- 阐明FONP-PAC介导的AGS改进背后的机制.
主要方法:
- 将具有不同FONP-PACFe/C比率 (S1,S2) 的AGS系统与控制器 (S0) 的比较.
- 监测污泥生长,污染物去除 (COD,NH4+-N,TN) 和有氧脱率.
- 使用16S rRNA测序进行微生物社区分析.
主要成果:
- 在S2系统 (较高的Fe/C比率) 中,污泥生长速度最快 (1106微米),污染物清除率最高 (95.96%COD,100%NH4+-N,79.53%TN).
- S2实现了最高的有氧脱率 (9.93 mg·gVSS−1·h−1),明显超过了对照值.
- FONP-PAC丰富了特定的微生物类 (Bacteroidota) 和属 (Zoogloea),增强了物种间的电子转移和污泥结构.
结论:
- 优化的FONP-PAC剂量有效地促进了AGS中的快速颗粒和高效的营养物质去除.
- FONP-PAC增强了代谢协同作用和物种间电子转移,从而提高了废水处理性能.
- 这项研究表明,用于先进的废水处理,纳米材料介导增强AGS的有希望的策略.
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