Collaborative Research: An Integrated Approach to Understanding and Spatially Modeling Haloacetonitrile Disinfection By-Products Associated with De Facto Wastewater Reuse

合作研究：了解与实际废水再利用相关的卤代乙腈消毒副产物并对其进行空间建模的综合方法

• 批准号: 1804229
• 负责人: Paul Westerhoff
• 金额: $ 13万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1804229&HistoricalAwards=false
• 关键词: Collaborative; Research; Integrated; Approach; Understanding

Haloacetonitriles (HANs) are a group of disinfection byproducts (DBPs) formed during drinking water disinfection that are important contributors to drinking water toxicity. Recent studies show that HAN formation is increased when the treated wastewater discharged from upstream treatment plants are present in the water supply that is treated for potable use. Therefore, it is desirable to develop a watershed scale model to predict the risks of HAN formation based on the presence of upstream treated wastewater discharges and the drinking water disinfection processes. This collaborative study between SUNY at Buffalo and Arizona State aims to fill the knowledge gaps that have prevented the development of such a model. Specifically, this study will be the first to determine the rates at which treated wastewater discharges alter the potential formation of HANs due to environmental degradation processes. The experimentally determined parameters will then be applied in regional or national scale water quality models. Additionally, a data science course will be introduced in the environmental engineering curriculum at Arizona State University. A two-semester, cross-course student project spanning modeling and water treatment will be developed at the University at Buffalo. If successful, the development of these models will help aid in the protection of the Nation's water security while monitoring the effects of various water treatment processes.De facto reuse, or indirect potable water reuse, the incidental presence of treated wastewater effluent in downstream drinking water supply, is increasing with urbanization worldwide. The proposed project aims to develop a comprehensive understanding of the risks associated with HANs under de facto wastewater reuse scenarios on the watershed and national scale. It has four research objectives: (1) Determine the HAN risks associated with wastewater effluents as a function of wastewater treatment process and isolate the contribution from wastewater organic matter and inorganic constituent bromide; (2) Determine the influence of biological and photochemical transformation of organic matter on the wastewater-derived HAN risks; (3) Integrate experimental findings into the geospatial DRINCS model to assess wastewater-derived HAN risks for all water treatment plants supplied by surface water in the U.S. (4) Compare model predictions from DRINCS with regional hydrodynamic models to validate the simplifications made in DRINCS or estimate the associated error. This project is the first effort to quantitatively assess wastewater-derived HAN risks on the national scale. Although it focuses on HANs, the framework of integrating experimental research with modeling is transferrable to other high priority emerging DBPs and contaminants derived from wastewater. The outcome of this project will inform the nationwide HAN risks due to de facto reuse, and potentially provide strategies for wastewater and water utilities to collaboratively address DBP problems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

卤乙腈（HAN）是一组消毒副产品（DBP），在饮用水消毒期间形成，是饮用水毒性的重要因素。最近的研究表明，当从上游处理厂排出的处理的废水供应供饮用水处理时，就会增加汉的形成。因此，希望开发一个流域量表模型，以根据上游处理的废水排放和饮用水消毒过程来预测han形成的风险。布法罗和亚利桑那州纽约州立大学纽约州立大学之间的这项合作研究旨在填补阻碍这种模型发展的知识差距。具体而言，这项研究将是第一个确定处理的废水排放率会改变由于环境退化过程而导致的汉斯的潜在形成的速率。然后，实验确定的参数将用于区域或国家规模水质模型。此外，将在亚利桑那州立大学的环境工程课程中引入数据科学课程。将在布法罗大学开发一个跨越建模和水处理的跨课程学生项目。如果成功的话，这些模型的开发将有助于保护国家水安全，同时监测各种水处理过程的影响。事实上，重新使用或间接饮用水再利用，在下游饮用水中，偶然存在的废水废水存在在全球范围内随着城市化而增加。拟议的项目旨在对在流域和国家规模上的废水再利用情景下对与汉斯相关的风险进行全面了解。它具有四个研究目标：（1）确定与废水废水相关的HAN风险是废水处理过程的函数，并隔离了废水有机物和无机成分溴化物的贡献； （2）确定有机物的生物学和光化学转化对废水衍生的han风险的影响； （3）将实验发现整合到地理空间DRINCS模型中，以评估美国地表水提供的所有水处理厂的废水衍生的HAN风险（4）比较了DRINCS与区域流体动力学模型的模型预测，以验证DRINC中的简化或估算相关错误。该项目是在国家规模上定量评估废水衍生的HAN风险的第一个努力。尽管它专注于汉斯，但将实验研究与建模集成的框架可以转移到其他高优先级新兴的DBP和来自废水的污染物的框架。该项目的结果将为全国范围内的汉族风险提供信息，并有可能为废水和水公用事业提供协作解决DBP问题的策略。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力功能和更广泛影响的评估来通过评估来支持的，这是值得的。

项目成果

Drinking water vulnerability in less-populated communities in Texas to wastewater-derived contaminants

• DOI: 10.1038/s41545-019-0043-0
• 发表时间: 2019-10
• 期刊: npj Clean Water
• 影响因子: 11.4
• 作者: Thuy T. Nguyen;P. Westerhoff

Data‐mining methods predict chlorine residuals in premise plumbing using low‐cost sensors

• DOI: 10.1002/aws2.1214
• 发表时间: 2021-01
• 期刊: AWWA Water Science
• 作者: Daniella Saetta;Rain Richard;Carlos Leyva;P. Westerhoff;Treavor H. Boyer