IFAS间歇性通风膜生物反应器系统:污泥保留时间的影响
Paulo Marcelo Bosco Mofatto1, Alida Cosenza1, Daniele Di Trapani1
1Engineering Department, Palermo University, Viale delle Scienze, Ed. 8, 90128, Palermo, Italy.
Journal of environmental management
|March 7, 2025
概括
这项研究评估了一种膜生物反应器 - 集成固定膜激活泥 - 间歇性通风 (MBR-IFAS-IA) 系统. 降低污泥保留时间 (SRT) 改善了碳去除,但恶化了去除和增加了膜污染.
科学领域:
- 环境工程环境工程
- 废水处理技术 废水处理技术
- 可持续的水资源管理
背景情况:
- 先进的废水处理对于实现净零碳排放至关重要.
- 膜生物反应器 - 集成固定膜激活泥 - 间歇通风 (MBR-IFAS-IA) 系统提供了增强污染物清除的潜力.
- 污泥保留时间 (SRT) 是影响MBR-IFAS-IA性能的一个关键操作参数.
研究的目的:
- 在不同的SRT下全面研究MBR-IFAS-IA试验装置的性能.
- 评估间歇性通风对废水处理效率和温室气体排放的影响.
- 评估SRT,营养除去和膜污染之间的关系.
主要方法:
- 在三个不同的SRT (7.0,3.5和2.5天) 下运行MBR-IFAS-IA试验装置.
- 综合监测碳,和的去除,细胞外聚合物质和动力学.
- 测量温室气体排放和膜污染特征.
主要成果:
- 高平均化学氧气需求去除效率 (97.8%).
- 在3.5天SRT (43.8%) 和7.0天SRT (27.7%) 相比,改善了正酸盐的去除.
- 减少SRT显著损害了氨氧化和总去除,并加剧了膜污染,特别是不可逆转的污染.
结论:
- 该MBR-IFAS-IA系统显示了高碳去除效率.
- 在MBR-IFAS-IA系统中,优化SRT对于平衡营养除去和减轻膜污染至关重要.
- 将SRT降低到3.5天以下会对去除和膜性能产生负面影响,挑战净零排放目标.
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