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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. **

废水处理系统中流动和混合过程的数值研究 * 拟议项目旨在开发一个数值模型，用于模拟废水处理系统中的流动和混合过程。所开发的模型也将被用来进行案例研究（污泥混合在污水处理厂的吸入集管）。应用的重点是流场和温度场的分布。此外，不同的几何和操作条件的影响也是感兴趣的。该模型和相关的观察结果可以帮助确定系统的几何形状，最佳的操作条件和系统材料。应该注意的是，当污泥被加热或稀释时，大多数经验或理论公式变得无效或不太准确，因为它们会显著影响水力特性。因此，本研究可以显着提高设计污水处理系统的实践，因为它将开发和应用先进的三维数值模型。这项研究也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污水在处理系统中的流动和混合过程，这对处理系统的合理设计和正确处理污水至关重要。研究的结果将导致系统的更有效的设计和显着降低成本，因为它将减少设计中的不确定性的风险，并将增加对故障或废水处理不当的安全裕度，以及保护环境影响。**