Propuesta de soluciones a los problemas de funcionamiento de la estación depuradora de aguas residuales de Noblejas (Toledo)
[EN] Noblejas’ Wastewater Treatment Plant (WWTP), located in the Toledo’s town with the same name, was inaugurated in 2008 and was capable of process a 1300 m3/day flow, as it was designed. From then until now, several companies have taken its operation but they haven’t executed the relevant mainten...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/49465 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/49465 |
| Access Level: | acceso abierto |
| Palabra clave: | EDAR Noblejas Tratamiento de aguas Simulación de depuradora WWTP Wastewater treatment Wastewater plant simulation INGENIERIA HIDRAULICA TECNOLOGIA DEL MEDIO AMBIENTE Máster Universitario en Ingeniería Hidráulica y Medio Ambiente-Màster Universitari en Enginyeria Hidràulica i Medi Ambient |
| Sumario: | [EN] Noblejas’ Wastewater Treatment Plant (WWTP), located in the Toledo’s town with the same name, was inaugurated in 2008 and was capable of process a 1300 m3/day flow, as it was designed. From then until now, several companies have taken its operation but they haven’t executed the relevant maintenance of the plant, which has been deteriorated and now can’t accomplish the quality discharge limits of the Real Decreto-Ley 11/1995, of December 28, that establishes the rules governing the treatment of urban wastewater. The WWTP has the following elements: bar screen, aerated grit chamber with fat and grease removal, equalization basin, physico-chemical treatment, primary clarifier, anaerobic basins, oxidation ditch, secondary clarifier, sludge thickener and dewatering centrifuges. The plant is operated by extended aeration method using a high mean cell residence time to obtain sludge with a low level of organic matter and avoid the use of sludge digestion. Besides, the plant was designed with the purpose of oxidizing nitrogeneous matter and removing phosphates biologically or chemically. With the actual disposition of the elements, it’s impossible to remove phosphates biologically. The next Master Thesis has found a solution to the non-completion of the quality discharge limits by proposing four different operation alternatives of the plant: maintaining the current distribution and using chemical precipitation in order to remove the phosphates, including the equalization basin into the secondary treatment and remove phosphates biologically, reducing the aerobic area in the ditch and use phosphates chemical precipitation and reducing the aerobic area and including the equalization basin to remove biologically the phosphates. In order to know the suitability of those proposals, it’s been realized several simulations with the software DESASS, developed by the research group Calagua. Starting from the results provided by DESASS an assessment of costs in reagent, produced sludge and plant working hours was done in order to decide which of the alternatives is cheaper and generates better results. Finally, the second proposal, which includes the equalization basin into the secondary treatment to remove the phosphates biologically, was chosen as the best alternative. |
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