Fate and Transport of Contaminants and Advanced Tertiary Treatment for their Removal During Municipal Wastewater Treatment Processes

城市污水处理厂（MWTPs）长期以来一直被认为是许多历史污染物以及许多新出现的污染物（CEC）的重要来源，例如药品和个人护理产品（PPCPs）以及阻燃剂。与这些污染物有关的健康问题包括非致癌性和致癌性健康影响以及内分泌干扰的可能性。申请人已就两项研究计划进行研究，以更了解和管理污水处理厂排放的污染物对环境的影响。拟议的研究计划将扩展这两个研究项目的发现，如下所述。**-我们最近的工作表明，在污水处理过程中，胶体有机碳（COC）可以在控制有机污染物的命运方面发挥重要作用。然而，影响这种划分的因素仍然不清楚。建议使用已经开发的方法对其他化学物质组进行更多的工作，以便更好地了解其行为并修改预测模型。研究结果有望帮助科学家和管理者更好地理解、量化和管理MWTP废水排放对环境的污染物负荷。**- mwtp在去除几种CECs（如药物）方面不是很有效，并且是这些CECs进入饮用水水源的重要点源。mwtp也是致病生物（量化为大肠杆菌）的重要来源。我们最近的研究证明了臭氧化在加拿大二级处理的城市废水中同时实现消毒和转化许多CECs的有效性。建议的研究将探讨进一步发展和优化臭氧处理MWTP废水的工艺，以最大限度地减少污染物水平和毒性。拟议的研究预计将导致更有效和更具成本效益的战略，以处理MWTP废水和饮用水源中的污染物。********

Municipal wastewater treatment plants (MWTPs) have long been recognized to be of concern as a significant source for many contaminants of historical as well as many new contaminants of emerging concern (CEC) such as pharmaceuticals and personal care products (PPCPs), and flame retardants. The health concerns associated with these contaminants include non-carcinogenic and carcinogenic health effects and potential for endocrine disruption. The applicant has conducted research on two research projects to better understand and manage contaminant loadings to the environment resulting from MWTP effluents. The proposed research program will extend the findings from both the research projects, as discussed below.**- Our recent work has shown that colloidal organic carbon (COC) can play an important role in controlling the fate of organic contaminants during the sewage treatment process. However, factors affecting this partitioning are still not clear. More work with other group of chemicals is proposed using methodologies already developed are planned to better understand the behaviour and modify predictive models. The results are expected to help scientists and regulators better understand, quantify and manage contaminant loadings to the environment from MWTP effluent discharges.**- MWTPs are not very effective in the removal of several CECs (such as pharmaceuticals) and are an**important point source for these to drinking water sources. MWTPs are also important sources for disease causing organisms (quantified as E. coli). Our recent study has demonstrated the effectiveness of ozonation in simultaneously achieving disinfection and transformation of many CECs in secondary treated municipal wastewaters in Canada. The proposed research would examine further development and optimization of ozone-based process for the treatment of MWTP effluent to maximize reduction in contaminant level as well as toxicity.The proposed research is expected to lead to more efficient and cost-effective strategies for dealing with contaminants in MWTP effluents and drinking water sources.********