在压缩主导的污泥机械脱水过程中,作为压缩性和透性演变的复合学代理的产量应力
Wen-Hui Liu1, Yuan-Ping Zeng1, Xuan-Xin Chen1
1Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Center of Wastewater Resource Reuse, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
Journal of environmental management
|March 13, 2026
概括
产量应力 (σy) 有效地预测了工厂条件下的污泥脱水性能. 这项研究表明,产量压力可以优化机械脱水过程,弥合实验室发现和现实世界的操作.
科学领域:
- 环境工程 环境工程
- 水处理 处理水的方法
- 材料科学 材料科学 材料科学
背景情况:
- 污泥的压缩性和透性对于除水效率至关重要.
- 传统的方法耗时,阻碍了流程优化.
- 产量应力 (σy) 对于预测脱水是有前途的,但需要在工厂条件下进行验证.
研究的目的:
- 研究污泥孔结构的动态演变,产量应力 (σy),压缩性和透性.
- 在实际的工厂条件下使用过器压力机评估这些参数.
- 评估σy作为污泥脱水性能预测因素的潜力.
主要方法:
- 使用了聚烯隔膜过机,经过化学调节 (基本化和化).
- 采用先进的特征化技术:低场核磁共振,计算机断层扫描和学分析.
- 在机械压缩过程中监控结构和机械变化.
主要成果:
- 机械压缩减少了毛孔大小和毛孔度,增加了隔离的毛孔和的刚性.
- 生产应力 (σy) 增加了458%,而压缩性指数 (Cc) 和透系数 (k) 显著下降 (分别为72.7%和85.2%).
- 在 σy 与 Cc (R2 ≥ 0.827) 和 k (R2 ≥ 0.845) 之间发现了强烈的负相关性,这表明了 σy 的预测能力.
结论:
- 产量应力 (σy) 是真实压缩下污泥脱水能力的可靠指标.
- 对σy的测量可以预测和优化大规模的污泥脱水结果.
- 这项研究提供了一个实际的工具,通过将风学指标与脱水性能联系起来,改善污泥管理.
相关概念视频
01:21Plastic Behavior
679
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
679
01:24Stress-Strain Diagram - Ductile Materials
2.4K
The stress-strain relationship in ductile materials such as structural steel or aluminium is intricate and progresses through several stages. When a specimen is loaded, it initially exhibits a linear length increase, depicted by a steep straight line on the stress-strain diagram. It indicates the material is elastically deforming and will return to its original shape once unloaded. However, when a critical stress value is reached, plastic deformation begins. This stage sees substantial...
2.4K
01:21Bulk Modulus
858
The bulk modulus is a scientific term used to describe a material's resistance to uniform compression. It is the proportionality constant that links a change in pressure to the resulting relative volume change.
858
01:27Density, Specific Weight, Specific Gravity and Compressibility of Fluid
2.2K
Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
Specific weight represents the weight per unit volume and is calculated by multiplying...
Specific weight represents the weight per unit volume and is calculated by multiplying...
2.2K
01:20Strain-Energy Density
1.0K
Understanding the strain energy density in materials under axial load is crucial for evaluating their mechanical behavior and durability. When a rod is subjected to such a load, it elongates and stores energy, known as strain energy, as potential energy within the material. This energy is measured in terms of energy per unit volume.
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this region...
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this region...
1.0K
01:20Elasticity in Concrete
422
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
422