Modelling of fugitive emissions from urban drainage systems

城市排水系统无组织排放的建模

• 批准号: 1690124
• 金额: --
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1690124
• 关键词: Modelling; fugitive; emissions; urban; drainage

Odours from urban drainage systems can be a serious nuisance and health hazard. Measures to minimize related problems can be classified with regard to the stages in odour generation: (i) in-sewer processes during unsteady flow of stormwater and sewage in combined and wastewater networks, (ii) air flow in pipes, (iii) ventilation from sewers to the surface, and (iv) mixing of gases in the atmosphere.This PhD will focus on formulating and developing a novel mathematical model (based on numerical techniques) for simulation of the second and third above described stages. This model will use the results of an existing sewer flow and quality model as input/boundary conditions/computational field, and will feed its results to an existing air quality model to analyse impacts and measures to reduce unwanted effects.The modelling approach that will be developed in this project will be tested on a range of situations, such as: a release of large amounts of air from sewers during rainfall, specific issues in coastal zones (tidal effects), hot climates and/or tourist areas, odours due to sewer flooding, and other. Model calibration using field data will be implemented. The ultimate aim is to enable analysis of possible measures to reduce odour problems.

城市排水系统的气味可能会造成严重的滋扰和健康危害。尽量减少相关问题的措施可根据臭味产生的阶段进行分类：(i) 雨水和污水在混合管网和废水管网中不稳定流动期间的下水道内处理，(ii) 管道中的空气流动，(iii) 管道内的通风该博士将专注于制定和开发一种新颖的数学模型（基于数值技术），用于模拟上述第二和第三阶段。该模型将使用现有下水道流量和质量模型的结果作为输入/边界条件/计算字段，并将其结果输入现有的空气质量模型，以分析影响和减少不良影响的措施。建模方法将是该项目开发的技术将在一系列情况下进行测试，例如：降雨期间下水道释放大量空气、沿海地区的具体问题（潮汐效应）、炎热的气候和/或旅游区、下水道产生的气味洪水，以及 其他。将使用现场数据进行模型校准。最终目标是分析减少异味问题的可能措施。