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Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling

Algal photosynthesis plays a key role in the removal mechanisms of waste stabilization ponds (WSPs), which is indicated in the variations of three parameters, dissolved oxygen, pH, and chlorophyll a. These variations can be considerably affected by extreme climatic conditions at high altitude. To in...

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Autores Principales: Ho, Long, Van Echelpoel, Wout, Alvarado Martinez, Andres Omar
Formato: info:eu-repo/semantics/ARTÍCULO
Publicado: 2019
Materias:
ALGAL PHOTOSYNTHESIS
HIGH ALTITUDE
SPATIOTEMPORAL VARIATION
STRUCTURE EQUATION MODELING
WASTE STABILIZATION PONDS
Acceso en línea:http://dspace.ucuenca.edu.ec/handle/123456789/31829
https://iwaponline.com/wst/article-abstract/78/1/37/39361/Exploring-the-influence-of-meteorological?redirectedFrom=fulltext
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spelling oai:localhost:123456789-318292019-03-12T09:03:23Z Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling Ho, Long Van Echelpoel, Wout Alvarado Martinez, Andres Omar ALGAL PHOTOSYNTHESIS HIGH ALTITUDE SPATIOTEMPORAL VARIATION STRUCTURE EQUATION MODELING WASTE STABILIZATION PONDS Algal photosynthesis plays a key role in the removal mechanisms of waste stabilization ponds (WSPs), which is indicated in the variations of three parameters, dissolved oxygen, pH, and chlorophyll a. These variations can be considerably affected by extreme climatic conditions at high altitude. To investigate these effects, three sampling campaigns were conducted in a high-altitude WSP in Cuenca (Ecuador). From the collected data, the first application of structure equation modeling (SEM) on a pond system was fitted to analyze the influence of high-altitude characteristics on pond performance, especially on the three indicators. Noticeably, air temperature appeared as the highest influencing factors as low temperature at high altitude can greatly decrease the growth rate of microorganisms. Strong wind and large diurnal variations of temperature, 7–20 C, enhanced flow efficiency by improving mixing inside the ponds. Intense solar radiation brought both advantages and disadvantages as it boosted oxygen level during the day but promoted algal overgrowth causing oxygen depletion during the night. From these findings, the authors proposed insightful recommendations for future design, monitoring, and operation of high-altitude WSPs. Moreover, we also recommended SEM to pond engineers as an effective tool for better simulation of such complex system like WSPs. Algal photosynthesis plays a key role in the removal mechanisms of waste stabilization ponds (WSPs), which is indicated in the variations of three parameters, dissolved oxygen, pH, and chlorophyll a. These variations can be considerably affected by extreme climatic conditions at high altitude. To investigate these effects, three sampling campaigns were conducted in a high-altitude WSP in Cuenca (Ecuador). From the collected data, the first application of structure equation modeling (SEM) on a pond system was fitted to analyze the influence of high-altitude characteristics on pond performance, especially on the three indicators. Noticeably, air temperature appeared as the highest influencing factors as low temperature at high altitude can greatly decrease the growth rate of microorganisms. Strong wind and large diurnal variations of temperature, 7–20 C, enhanced flow efficiency by improving mixing inside the ponds. Intense solar radiation brought both advantages and disadvantages as it boosted oxygen level during the day but promoted algal overgrowth causing oxygen depletion during the night. From these findings, the authors proposed insightful recommendations for future design, monitoring, and operation of high-altitude WSPs. Moreover, we also recommended SEM to pond engineers as an effective tool for better simulation of such complex system like WSPs. 2019-01-22T17:11:03Z 2019-01-22T17:11:03Z 2018 info:eu-repo/semantics/ARTÍCULO 0273-1223 (Print) 1996-9732 (Electronic) 0273-1223 (Linking) http://dspace.ucuenca.edu.ec/handle/123456789/31829 https://iwaponline.com/wst/article-abstract/78/1/37/39361/Exploring-the-influence-of-meteorological?redirectedFrom=fulltext 10.2166/wst.2018.254 es_ES instname:Universidad de Cuenca reponame:Repositorio Digital de la Universidad de Cuenca info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/ec/ Water Science & Technology info:eu-repo/date/embargoEnd/2050-01-31 info:eu-repo/semantics/Versión publicada
institution UCUENCA
collection Repositorio UCUENCA
universidades UCUENCA
language
format info:eu-repo/semantics/ARTÍCULO
topic ALGAL PHOTOSYNTHESIS
HIGH ALTITUDE
SPATIOTEMPORAL VARIATION
STRUCTURE EQUATION MODELING
WASTE STABILIZATION PONDS
spellingShingle ALGAL PHOTOSYNTHESIS
HIGH ALTITUDE
SPATIOTEMPORAL VARIATION
STRUCTURE EQUATION MODELING
WASTE STABILIZATION PONDS
Ho, Long
Van Echelpoel, Wout
Alvarado Martinez, Andres Omar
Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
description Algal photosynthesis plays a key role in the removal mechanisms of waste stabilization ponds (WSPs), which is indicated in the variations of three parameters, dissolved oxygen, pH, and chlorophyll a. These variations can be considerably affected by extreme climatic conditions at high altitude. To investigate these effects, three sampling campaigns were conducted in a high-altitude WSP in Cuenca (Ecuador). From the collected data, the first application of structure equation modeling (SEM) on a pond system was fitted to analyze the influence of high-altitude characteristics on pond performance, especially on the three indicators. Noticeably, air temperature appeared as the highest influencing factors as low temperature at high altitude can greatly decrease the growth rate of microorganisms. Strong wind and large diurnal variations of temperature, 7–20 C, enhanced flow efficiency by improving mixing inside the ponds. Intense solar radiation brought both advantages and disadvantages as it boosted oxygen level during the day but promoted algal overgrowth causing oxygen depletion during the night. From these findings, the authors proposed insightful recommendations for future design, monitoring, and operation of high-altitude WSPs. Moreover, we also recommended SEM to pond engineers as an effective tool for better simulation of such complex system like WSPs.
author Ho, Long
Van Echelpoel, Wout
Alvarado Martinez, Andres Omar
author_facet Ho, Long
Van Echelpoel, Wout
Alvarado Martinez, Andres Omar
author_sort Ho, Long
title Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
title_short Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
title_full Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
title_fullStr Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
title_full_unstemmed Exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
title_sort exploring the influence of meteorological conditions on the performance of a waste stabilization pond at high altitude with structural equation modeling
publishDate 2019
url http://dspace.ucuenca.edu.ec/handle/123456789/31829
https://iwaponline.com/wst/article-abstract/78/1/37/39361/Exploring-the-influence-of-meteorological?redirectedFrom=fulltext
_version_ 1635523731480641536
score 11,871979

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