综合固定膜活性污泥 (IFAS) 和AAO活性污泥方法的全面比较:不同操作参数的影响
Zihua Lan1, Yaping Zhang1, Renli Liang2
1Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
Chemosphere
|April 18, 2024
概括
集成固膜活性污泥 (IFAS) 系统在去除COD,NH4+-N和TN等污染物方面优于传统AAO工艺. IFAS提供了更高的去除效率,更低的操作条件和增强的微生物群落.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 废水处理 废水处理
背景情况:
- 市政废水处理厂的有限土地可用性需要先进的技术.
- 集成固定膜激活泥 (IFAS) 提供了更好的去除和处理能力.
- 与无氧-无氧-有氧 (AAO) 活性污泥工艺的比较对于优化废水处理至关重要.
研究的目的:
- 为了比较IFAS和AAO系统的污染物清除能力.
- 调查IFAS和AAO之间的微生物社区组成差异.
- 评估操作参数 (HRT,回收率,DO) 对系统性能的影响.
主要方法:
- 在不同操作参数下对IFAS和AAO系统进行比较分析.
- 测量化学氧气需求 (COD), (NH4+-N),总 (TN) 和总 (TP) 的去除效率.
- 使用16S rDNA测序和定量聚合酶链反应 (q-PCR) 的微生物社区分析.
主要成果:
- 与减少HRT的AAO相比,IFAS显示了COD (5.76%),NH4+-N (8.85%) 和TN (12.79%) 的更高的去除效率.
- 在没有添加剂的情况下,IFAS实现了0.82 mg/L的TP度.
- 在较低的HRT,化溶液回收率和DO下,IFAS表现优越.
- 16S rDNA分析显示IFAS中与脱相关的细菌的数量较高.
- 在IFAS系统中,q-PCR证实了更高的化和脱基因丰度.
结论:
- 与AAO系统相比,IFAS技术在除和污染物处理能力方面提供了显著的优势.
- 在IFAS中增强的微生物群落和生物膜形成有助于卓越的性能.
- IFAS为城市废水处理提供了一种更有效和潜在的成本效益更高的解决方案,特别是在土地供应有限的情况下.
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