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...

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Autores principales:	Helieh Abbasi, Amin Zeynolabedin, Gholamreza Nabi Bidhendi
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	coastal flooding combined sewer overflows hydrologic modeling mcdm wastewater treatment plants Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/65a51a10d2804879b65334207ca6b8d5
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spelling	oai:doaj.org-article:65a51a10d2804879b65334207ca6b8d52021-11-05T19:07:36ZAssessment of combined sewer overflows impacts under flooding in coastal cities2040-22442408-935410.2166/wcc.2021.322https://doaj.org/article/65a51a10d2804879b65334207ca6b8d52021-09-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/6/2460https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Wastewater 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.;Helieh AbbasiAmin ZeynolabedinGholamreza Nabi BidhendiIWA Publishingarticlecoastal floodingcombined sewer overflowshydrologic modelingmcdmwastewater treatment plantsEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 6, Pp 2460-2478 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coastal flooding combined sewer overflows hydrologic modeling mcdm wastewater treatment plants Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	coastal flooding combined sewer overflows hydrologic modeling mcdm wastewater treatment plants Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi Assessment of combined sewer overflows impacts under flooding in coastal cities
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.;
format	article
author	Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi
author_facet	Helieh Abbasi Amin Zeynolabedin Gholamreza Nabi Bidhendi
author_sort	Helieh Abbasi
title	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_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_sort	assessment of combined sewer overflows impacts under flooding in coastal cities
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/65a51a10d2804879b65334207ca6b8d5
work_keys_str_mv	AT heliehabbasi assessmentofcombinedseweroverflowsimpactsunderfloodingincoastalcities AT aminzeynolabedin assessmentofcombinedseweroverflowsimpactsunderfloodingincoastalcities AT gholamrezanabibidhendi assessmentofcombinedseweroverflowsimpactsunderfloodingincoastalcities
_version_	1718444042218373120

Assessment of combined sewer overflows impacts under flooding in coastal cities

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