Ozone treatment of combined sewer overflow (CSO) for disinfection and micropollutant control

合流下水道溢流 (CSO) 的臭氧处理用于消毒和微污染物控制

• 批准号: 520196-2017
• 负责人: GamalElDin, Mohamed
• 金额: $ 4.37万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 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=651468
• 关键词: Ozone; treatment; combined; sewer; overflow

Combined sewer systems are designed to collect stormwater runoff, domestic sewage, and industrial wastewater in the same pipe and bring it to the local wastewater treatment plant (WWTP). During heavy rain and snow storms, combined sewers receive higher than normal flows. WWTPs are unable to handle these flows that may be as much as 5 to 6 time the plant's design capacity. Therefore, a portion of the excess stormwater and untreated wastewater, also called combined sewer overflow (CSO), has to be diverted to the receiving environment with little to no treatment. The CSOs are used to alleviate the overloading of the combined sewer system to prevent sewer backups in residential and commercial buildings and local streets. However, CSOs can impact the water quality and environmental ecosystems in the receiving water bodies if they are discharged into rivers without receiving proper treatment. CSOs may contain dissolved contaminants such as pharmaceuticals and personal care products, particulate organic matter loads, bacteria and viruses. Therefore, there is an urgent need to enhance the treatment of CSOs to reduce their environmental impacts. The proposed NSERC Collaborative Research and Development (CRD) Program will conduct a comprehensive fundamental and applied research in the area of municipal wastewater, with a focus on a deep understanding of ozonation in terms of process fundamentals, treatment mechanisms, and practical applicability for CSO treatment. The overall objective of the proposed CRD Program is to develop an effective ozone-based treatment approach for the safe release of treated CSOs into the environment. Using ozonation or catalytic ozonation as disinfectant and oxidant may be a viable option to simultaneously enhance the disinfection capabilities to meet the regulatory requirements and target micropollutants that are present in CSOs. This NSERC CRD program is a major advancement in wastewater treatment by providing an enhanced ozone-based treatment approach, aiming to improve the overall quality of the discharged CSOs into the environment and promote the protection of the environment and human health in Canada.

联合下水道系统旨在将雨水径流，生活污水和工业废水收集在同一管道中，并将其带到当地的污水处理厂（WWTP）。在暴雨和暴风雪期间，综合下水道的流量高于正常水平。污水处理厂无法处理这些流量，这些流量可能是工厂设计能力的5到6倍。因此，一部分多余的雨水和未经处理的废水，也被称为联合下水道溢流（CSO），必须在几乎没有处理的情况下被转移到接收环境。市政系统的作用是减轻合用污水渠系统的超载，防止住宅、商业楼宇及本地街道的污水渠堵塞。然而，如果公民社会组织未经适当处理而排入河流，则会影响接收水体的水质和环境生态系统。公民社会组织可能含有溶解的污染物，如药品和个人护理产品、颗粒有机物质负荷、细菌和病毒。因此，迫切需要加强对民间社会组织的处理，以减少其对环境的影响。拟议的NSERC合作研究与发展（CRD）计划将在城市污水领域开展全面的基础和应用研究，重点是深入了解臭氧化在CSO处理方面的工艺基础、处理机制和实际适用性。拟议的CRD计划的总体目标是开发一种有效的基于臭氧的处理方法，使处理后的cso安全释放到环境中。使用臭氧化或催化臭氧化作为消毒剂和氧化剂可能是一种可行的选择，可以同时增强消毒能力，以满足监管要求并针对公民社会组织中存在的微污染物。NSERC的CRD方案是废水处理方面的一项重大进展，它提供了一种基于臭氧的强化处理方法，旨在提高排放到环境中的cso的总体质量，促进加拿大对环境和人类健康的保护。