通过CFD建模与基准测试相结合的水力动力学解体效应评估
Aleksandra Dzido1, Justyna Walczak2, Honorata Jankowska2
1Warsaw University of Technology, Faculty of Power and Aeronautical Engineering, Institute of Heat Engineering, Nowowiejska 21/25, 00-665, Warsaw, Poland.
Journal of environmental management
|July 31, 2024
概括
污水污泥的水力动力分解主要依赖于机械破碎,而不是空洞化. 较低的旋转速度释放出更容易被生物分解的化合物,增强了甲生产潜力.
科学领域:
- 环境工程环境工程
- 生物技术是生物技术.
- 流体力学 流体力学 流体力学
背景情况:
- 水力动力分解对于污水污泥处理至关重要,受运行参数的影响.
- 了解这些参数是优化污泥分解和后续过程的关键.
研究的目的:
- 评估水力动力分解参数对污水污泥内部过程和影响的影响.
- 评估旋转速度和流体性质变化对分解的作用.
主要方法:
- 在三个旋转速度 (1500,2500,3000rpm) 进行了长板测试.
- 测量包括可溶化学氧需求 (SCOD),挥发性脂肪酸 (VFA),分解程度和生物化学甲潜力 (BMP).
- 数学建模被用来分析流体结构和空洞化.
主要成果:
- 在分解过程中,流体特性变化并没有显著改变流体结构.
- 数学建模表明,在每分钟1500转时没有化.
- 1500rpm处理的泥释放的有机化合物具有较高的生物降解性 (以较低的SCOD/VFA比率表示) 与较高的速度相比.
结论:
- 在本研究中,机械破碎是驱动水力动力学分解的主要机制.
- 洞化并不是导致污泥分解的主要现象.
- 较低的旋转速度可能会提高释放的有机化合物的生物降解性,从而可能改善甲生产.
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