期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 696, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.133904
关键词
Modeling; Nanomaterial; Urban river; Sewer
资金
- New York State Energy Research and Development Authority [105162]
- U.S. Geological Survey [G16AP00073]
- NSF CAREER award [1553909]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1553909] Funding Source: National Science Foundation
Combined sewer overflows (CSOs) occur frequently in the United States, discharging an estimated 3.2 billion cubic meters of untreated sewage into receiving waters every year. These discharges contain a variety of contaminants including engineered nanomaterials (ENMs), yet ENMs discharged through CSOs have not been taken into account in ENM fate and transport models. This study fills this knowledge gap by developing a new integrated model that links an urban hydrologic-hydraulic model, using the Storm Water Management Model (SWMM), with a three-dimensional hydrodynamic and water quality model of rivers, using the Environmental Fluid Dynamics Code (EFDC). The modeling framework was applied to predict the concentrations of titanium dioxide (TiO2) ENMs in the Buffalo River in Buffalo, New York, as a result of CSO events. CSOs are shown to have a potential for transient high concentrations of ENMs and thus potentially high localized risk near the CSO outfalls and deposition zones in the river. The present approach provides a promising modeling framework to simulate ENM fate and transport in urban waterways. The model presented in this study can help build amanagement tool to predict temporally and spatially varying concentrations of ENMs introduced into receiving waters through CSOs. (C) 2019 Elsevier B.V. All rights reserved.
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