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Título : | Performance of the first stage of the French system of vertical flow constructed wetlands with only two units in parallel: Influence of pulse time and instantaneous hydraulic loading rate |
Autor: | Garcia Zumalacarregui, Jorge Alejandro Von Sperling, Marcos |
Palabras clave : | Effluent Flow Rates Feeding By Pump Feeding By Siphon Pulse Loading |
Área de conocimiento FRASCATI amplio: | 2. Ingeniería y Tecnología |
Área de conocimiento FRASCATI detallado: | 2.3.2 Mecánica Aplicada |
Área de conocimiento FRASCATI específico: | 2.3 Ingeniería Mecánica |
Área de conocimiento UNESCO amplio: | 07 - Ingeniería, Industria y Construcción |
ÁArea de conocimiento UNESCO detallado: | 0715 - Mecánica y Metalurgia |
Área de conocimiento UNESCO específico: | 071 - Ingeniería y Profesiones Afines |
Fecha de publicación : | 2018 |
Fecha de fin de embargo: | 31-ago-2019 |
Volumen: | volumen 78, número 4 |
Fuente: | Water Science and Technology |
metadata.dc.identifier.doi: | 10.2166/wst.2018.355 |
Tipo: | ARTÍCULO |
Abstract: | The technology of vertical flow constructed wetlands - French system for treating raw wastewater depends on several hydraulic factors, one of them being the duration of the pulse feeding and the resulting instantaneous hydraulic loading rate. This paper analyses two scenarios in the same system, the first of a faster feeding by pump and the second of a slower feeding by siphon, both with instantaneous hydraulic loading rate values lower than the literature recommendations. The system treated raw wastewater from a population equivalent of 100 p.e. in Brazil, and was comprised by only the first stage and two units in parallel. The shorter duration of feeding time and higher instantaneous hydraulic loading rate were associated with significantly higher chemical oxygen demand and total Kjeldahl nitrogen removal efficiencies, but with no significant differences in terms of biochemical oxygen demand (BOD) and suspended solids (SS). Oxygen concentrations and redox potential in the effluent were evaluated, together with the effluent flow rate profiles. The removal efficiencies were associated with the accumulation of solids in the upper part of the filter resulting from seven years of operation and to the operating hydraulic conditions, which are important elements in the performance of the system. © IWA Publishing 2018. |
Resumen : | The technology of vertical flow constructed wetlands - French system for treating raw wastewater depends on several hydraulic factors, one of them being the duration of the pulse feeding and the resulting instantaneous hydraulic loading rate. This paper analyses two scenarios in the same system, the first of a faster feeding by pump and the second of a slower feeding by siphon, both with instantaneous hydraulic loading rate values lower than the literature recommendations. The system treated raw wastewater from a population equivalent of 100 p.e. in Brazil, and was comprised by only the first stage and two units in parallel. The shorter duration of feeding time and higher instantaneous hydraulic loading rate were associated with significantly higher chemical oxygen demand and total Kjeldahl nitrogen removal efficiencies, but with no significant differences in terms of biochemical oxygen demand (BOD) and suspended solids (SS). Oxygen concentrations and redox potential in the effluent were evaluated, together with the effluent flow rate profiles. The removal efficiencies were associated with the accumulation of solids in the upper part of the filter resulting from seven years of operation and to the operating hydraulic conditions, which are important elements in the performance of the system. © IWA Publishing 2018. |
URI : | http://dspace.ucuenca.edu.ec/handle/123456789/33291 https://www.scopus.com/record/display.uri?eid=2-s2.0-85054976332&doi=10.2166%2fwst.2018.355&origin=inward&txGid=7967caaa6b579206e434acee436d8b74 |
URI Fuente: | https://iwaponline.com/wst |
ISSN : | 0273-1223 |
Aparece en las colecciones: | Artículos
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