Assessment of combined sewer overflows impacts under flooding in coastal cities
Wastewater treatment plants (WWTPs) are among the most important infrastructures, especially in coastal cities with a risk of flooding. During intense floods, runoff volume may exceed the capacity of a WWTP causing plant failures. This paper investigates the impacts of flooding on combined sewer ove...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-09-01
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| Series: | Journal of Water and Climate Change |
| Subjects: | |
| Online Access: | http://jwcc.iwaponline.com/content/12/6/2460 |
| _version_ | 1818433504700006400 |
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| author | Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi |
| author_facet | Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi |
| author_sort | Helieh Abbasi |
| collection | DOAJ |
| description | Wastewater treatment plants (WWTPs) are among the most important infrastructures, especially in coastal cities with a risk of flooding. During intense floods, runoff volume may exceed the capacity of a WWTP causing plant failures. This paper investigates the impacts of flooding on combined sewer overflows (CSOs) in a WWTP in New York City. The impacts of CSOs after flooding are classified into four categories of health, economic, social, and environmental factors. Different factors are defined to evaluate the impacts of CSOs using multi-criteria decision-making of Preference Ranking Organization Method For Enrichment Evaluation and fuzzy technique for order performance by similarity to ideal solution. Since volume and depth were found to be the most significant factors for the CSO impact assessment, the Gridded Surface Subsurface Hydrologic Analysis model was run to compute flood depth and CSO volume under three treatment plant failure scenarios considering the Hurricane Sandy information. Sensitivity analysis revealed that the Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), and dissolved oxygen have the highest impacts on CSO. Uncertainty analysis was applied to investigate CSO impact variation. Results show that evaluating the impacts of CSOs in different aspects can help improve the efficiency of flood planning and management during storms. HIGHLIGHTS
The impacts of combined sewer overflows (CSOs) after flooding are classified into health, economic, social, and environmental factors.;
Different factors are defined, and consequently, different impacts of CSOs are evaluated using multi-criteria decision-making methods of Preference Ranking Organization Method for Enrichment Evaluation and fuzzy Technique for Order Performance by Similarity to Ideal Solution.;
Floodplain delineation and flood depth are obtained using the Gridded Surface Subsurface Hydrologic Analysis model.;
Under different scenarios, full operation, total failure and partial failure are considered.; |
| first_indexed | 2024-12-14T16:22:09Z |
| format | Article |
| id | doaj.art-65a51a10d2804879b65334207ca6b8d5 |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-12-14T16:22:09Z |
| publishDate | 2021-09-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-65a51a10d2804879b65334207ca6b8d52022-12-21T22:54:46ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542021-09-011262460247810.2166/wcc.2021.322322Assessment of combined sewer overflows impacts under flooding in coastal citiesHelieh Abbasi0Amin Zeynolabedin1Gholamreza Nabi Bidhendi2 School of Environmental Engineering, University of Tehran, Tehran, Iran School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran School of Environmental Engineering, University of Tehran, Tehran, Iran Wastewater treatment plants (WWTPs) are among the most important infrastructures, especially in coastal cities with a risk of flooding. During intense floods, runoff volume may exceed the capacity of a WWTP causing plant failures. This paper investigates the impacts of flooding on combined sewer overflows (CSOs) in a WWTP in New York City. The impacts of CSOs after flooding are classified into four categories of health, economic, social, and environmental factors. Different factors are defined to evaluate the impacts of CSOs using multi-criteria decision-making of Preference Ranking Organization Method For Enrichment Evaluation and fuzzy technique for order performance by similarity to ideal solution. Since volume and depth were found to be the most significant factors for the CSO impact assessment, the Gridded Surface Subsurface Hydrologic Analysis model was run to compute flood depth and CSO volume under three treatment plant failure scenarios considering the Hurricane Sandy information. Sensitivity analysis revealed that the Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), and dissolved oxygen have the highest impacts on CSO. Uncertainty analysis was applied to investigate CSO impact variation. Results show that evaluating the impacts of CSOs in different aspects can help improve the efficiency of flood planning and management during storms. HIGHLIGHTS The impacts of combined sewer overflows (CSOs) after flooding are classified into health, economic, social, and environmental factors.; Different factors are defined, and consequently, different impacts of CSOs are evaluated using multi-criteria decision-making methods of Preference Ranking Organization Method for Enrichment Evaluation and fuzzy Technique for Order Performance by Similarity to Ideal Solution.; Floodplain delineation and flood depth are obtained using the Gridded Surface Subsurface Hydrologic Analysis model.; Under different scenarios, full operation, total failure and partial failure are considered.;http://jwcc.iwaponline.com/content/12/6/2460coastal floodingcombined sewer overflowshydrologic modelingmcdmwastewater treatment plants |
| spellingShingle | Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi Assessment of combined sewer overflows impacts under flooding in coastal cities Journal of Water and Climate Change coastal flooding combined sewer overflows hydrologic modeling mcdm wastewater treatment plants |
| title | Assessment of combined sewer overflows impacts under flooding in coastal cities |
| title_full | Assessment of combined sewer overflows impacts under flooding in coastal cities |
| title_fullStr | Assessment of combined sewer overflows impacts under flooding in coastal cities |
| title_full_unstemmed | Assessment of combined sewer overflows impacts under flooding in coastal cities |
| title_short | Assessment of combined sewer overflows impacts under flooding in coastal cities |
| title_sort | assessment of combined sewer overflows impacts under flooding in coastal cities |
| topic | coastal flooding combined sewer overflows hydrologic modeling mcdm wastewater treatment plants |
| url | http://jwcc.iwaponline.com/content/12/6/2460 |
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