Modelling of emerging non-point water pollution problems and management measures

新出现的面源水污染问题和治理措施是这项提案的主要重点。西尼罗河病毒已成为具有国家意义的公共卫生问题。在对多伦多西尼罗河病毒幼虫项目进行了三年的实地研究后，申请人发现这一公共卫生问题可能会导致接收水中的非点源水污染。为了了解降雨对幼虫项目的影响和水污染问题的程度，申请人建议开发数学模型来模拟集水池和相关下水道排污口中杀幼虫化学品的命运。这些模型可以用来评估西尼罗河病毒幼体杀菌项目的有效性以及对接收水的潜在生态影响。绿色屋顶可以被定义为在传统的屋面系统上添加一层层的生长介质和植物而形成的绿色空间。由于在高度城市化的地区它具有减少暴雨径流的潜力，因此在城市化城市中引起了广泛的关注。在CRESTech对绿化屋顶的效益和成本的研究基础上，申请人建议开发数学模型来模拟绿化屋顶的雨水性能以及基于分水岭的绿化屋顶的累积雨水性能。这些模型可以帮助(1)建筑物业主实现屋顶绿化的雨水效益；以及(2)实际制定雨水管理的屋顶绿化政策。建议的研究项目将有助于我们了解新出现的面源水污染问题和管理措施。

Emerging non-point water pollution problems and management measures are the main focus of this proposal.   West Nile Virus has become a public health problem of national significance. After three years of field study of the larvicidng program for West Nile Virus in Toronto, the applicant has discovered that this public health problem may cause non-point water pollution in the receiving water.  In order to understand the effect of rainfall on a larviding program and the extent of the water pollution problem, the applicant proposes to develop mathematical models to simulate the fate of larviciding chemicals at catch basins and the associated sewer outfall.  These models can be used to evaluate the effectiveness of a larviciding program for West Nile Virus as well as the potential ecological effect on the receiving water. Greenroofs can be defined as a green space created by adding layers of growing medium and plants on top of a traditional roofing system. It has attracted a lot of attention in urbanized cities because it has the potential to reduce storm runoff in highly urbanized areas.  Building upon a CRESTech's research study on benefits and costs of greenroofs, the applicant proposes to develop mathematical models to simulate the stormwater performance of a greenroof as well as the cumulative stormwater performance of greenroofs on a watershed basis. These model can assist (1) building owners to realize the stormwater benefit of a greenroof; and (2) muncipalities to develop a greenroof policy for stormwater management.   The proposed research projects will contribute to our knowledge of emerging non-point water pollution problems and management measures.