Model of Suspended Solids Removal in the Primary Sedimentation Tanks for the Treatment of Urban Wastewater
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Título: | Model of Suspended Solids Removal in the Primary Sedimentation Tanks for the Treatment of Urban Wastewater |
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Autor/es: | Jover-Smet, Margarita | Martín-Pascual, Jaime | Trapote, Arturo |
Grupo/s de investigación o GITE: | Ingeniería Hidráulica y Ambiental (IngHA) | Tecnología de Materiales y Territorio (TECMATER) | Recursos Hídricos y Desarrollo Sostenible |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Instituto Universitario del Agua y las Ciencias Ambientales |
Palabras clave: | Primary settling tank | Surface overflow rate | Hydraulic retention time | Removal rate | Wastewater treatment |
Área/s de conocimiento: | Ingeniería Hidráulica |
Fecha de publicación: | 21-jun-2017 |
Editor: | MDPI |
Cita bibliográfica: | Jover-Smet M, Martín-Pascual J, Trapote A. Model of Suspended Solids Removal in the Primary Sedimentation Tanks for the Treatment of Urban Wastewater. Water. 2017; 9(6):448. doi:10.3390/w9060448 |
Resumen: | Primary settling tanks are used to remove solids at wastewater treatment plants and are considered a fundamental part in their joint operation with the biological and sludge treatment processes. The aim of this study was to obtain a greater understanding of the influence of operational parameters, such as surface overflow rate, hydraulic retention time, and temperature, on the removal efficiency of suspended solids and organic matter by the measurement of chemical oxygen demand and biochemical oxygen demand in the primary sedimentation process. The research was carried out in a semi-technical primary settling tank which was fed with real wastewater from a wastewater treatment plant. The physical process was strictly controlled and without the intervention of chemical additives. Three cycles of operation were tested in relation to the surface overflow rate, in order to check their influence on the different final concentrations. The results obtained show that the elimination efficiency can be increased by 11% for SS and 9% for chemical oxygen demand and biochemical oxygen demand, for variations in the surface overflow rate of around ±0.6 m3/m2·h and variations in hydraulic retention time of around ±2 h. The results also show that current design criteria are quite conservative. An empirical mathematical model was developed in this paper relating SS removal efficiency to q, influent SS concentration, and sewage temperature. |
URI: | http://hdl.handle.net/10045/67535 |
ISSN: | 2073-4441 |
DOI: | 10.3390/w9060448 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.3390/w9060448 |
Aparece en las colecciones: | INV - IngHA - Artículos de Revistas INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas INV - TECMATER - Artículos de Revistas |
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