Numerical study of flow and mixing processes in wastewater treatment systems**

废水处理系统中流动和混合过程的数值研究**

基本信息

批准号：
533730-2018
负责人：
Mohammadian, Abdolmajid
金额：
$ 1.82万
依托单位：
University of Ottawa
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=659987
关键词：
Numerical study flow mixing processes

项目摘要

Numerical study of flow and mixing processes in wastewater treatment systems****The proposed project aims to develop a numerical model for simulating the flow and mixing processes in wastewater treatment system. The developed model will also be employed to carry out a case study (the sludge mixing in a suction header of a wastewater treatment plant). The focus of the application is on the distribution of flow and temperature fields. In addition, the influences of different geometric and operating conditions are also of interest. The model and relevant observations can help determine the system geometry, optimal operating conditions, and system materials. It should be noted that when sludge is heated or diluted, most empirical or theoretical formulations become invalid or less accurate, as they can significantly affect the hydraulic properties. Therefore, the present study can significantly improve the practice of designing wastewater treatment systems, as it will develop and apply an advanced three-dimensional numerical model. The study will also be of important research and academic significance, as it can help the researchers obtain a clear understanding of the flow and mixing processes of wastewater in treatment systems, which is crucial for the sound design of the treatment system and proper disposal of the wastewater. The results of the research study will lead to a more efficient design of the system and significant cost reduction as it will reduce the risk of uncertainties in design and will increase the margin of safety against failure or inadequate disposal of wastewater as well as preserving the environmental effects. **

废水处理系统中的流量和混合过程的数值研究****拟议项目旨在开发一个数值模型，以模拟废水处理系统中的流量和混合过程。开发的模型还将用于进行案例研究（在废水处理厂的抽吸标头中混合污泥）。应用的重点是流量和温度场的分布。另外，不同几何和操作条件的影响也是感兴趣的。模型和相关观察结果可以帮助确定系统几何形状，最佳操作条件和系统材料。应当指出的是，当污泥加热或稀释时，大多数经验或理论制剂变得无效或不准确，因为它们会显着影响液压特性。因此，本研究可以显着改善设计废水处理系统的实践，因为它将开发和应用高级三维数值模型。这项研究还将具有重要的研究和学术意义，因为它可以帮助研究人员清楚地了解处理系统中废水的流量和混合过程，这对于处理系统的声音设计和正确处理废水至关重要。研究的结果将导致系统的更有效设计，并大大降低成本，因为这将降低设计不确定性的风险，并会增加安全边缘，以防止故障或处置废水处理以及保留环境影响。 **