Análisis y selección de alternativas para el diseño de una planta de tratamiento de aguas residuales urbanas en Tibú, norte de Santander, Colombia
[EN] Tibu is town of Colombia in the department of Norte de Santander, located northeast of the country, with an urban population over 15,000. Sewerage coverage is about 80% and has a treatment system for urban wastewater type oxidation pond, the system is located in the lower part of town and its s...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2016 |
| 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:10251/65158 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/65158 |
| Access Level: | acceso abierto |
| Palabra clave: | EDAR Simulation Biological nutrient removal Waste water treatment Depuración de aguas Simulación Eliminación biológica de nutrientes TECNOLOGIA DEL MEDIO AMBIENTE Máster Universitario en Ingeniería Hidráulica y Medio Ambiente-Màster Universitari en Enginyeria Hidràulica i Medi Ambient |
| Sumario: | [EN] Tibu is town of Colombia in the department of Norte de Santander, located northeast of the country, with an urban population over 15,000. Sewerage coverage is about 80% and has a treatment system for urban wastewater type oxidation pond, the system is located in the lower part of town and its source of receiving is the river of Tibu. Currently the oxidation pond removes only 30% of organic matter, there¿s no removal of nutrients and odors occur around. For the preservation of Tibu river it is important to control the discharge of organic matter and nutrients, since one of the main consequences is the eutrophication of the aquatic ecosystem, generating negative impacts that lead to the depletion of dissolved oxygen and therefore the suffocation of aquatic organisms and a decreased biodiversity. In Colombia exists currently a decree 1594 of 1984 which defines the values of allowable discharge for liquid waste discharge into a water body, the compounds of phosphorus and nitrogen do not have a maximum allowable value, the requirements for discharges to surface bodies are organic matter, solids and fats and oils. However, should be take into account the possible eutrophication problems that generate nutrients, plus a possible change in the current regulations in which a regulation of discharge of nutrients is contemplated. this final project will be based on European wastewater laws, state, regional and local regulations, in order to include in the process the removal of nutrients. Council directive 91/271/ EEC of 21 May 1991, which refers to the treatment of urban wastewater, indicates the permissible limit value for each parameter for the discharge from the wastewater treatment plant into the effluent. In the present project it will be establish the most suitable alternative for the design of a wastewater treatment plant in Tibú, in order to reach water quality objectives and requirements of discharge established in the council directive 91/271/EEC of 21 May 1991. For nitrogen removal it will be consider the classic scheme ¿predesnitrificación¿ and ¿nitrification-desnitrification simultaneously¿. For phosphorus removal, biological and chemical precipitation processes will be object of study. Besides two alternatives will be discussed, an anaerobic reactor with membranes, one with post-treatment for removing nitrogen and phosphorus and other without post treatment, assuming the effluent is rich nutrients and can be used for irrigation. Using the simulation program DESSAS optimal operating conditions of each possible alternative will be established. This includes the design of the elements, and the main operating variables, such as the cell retention time, the flow of internal and external recirculation, concentration of dissolved oxygen, adding reagents, among others. With the results of the different alternative designs will proceed to make a comparative study considering the analysis cost, which includes operation and maintenance of the wastewater plant. With the results of this comparison will proceed to select the most suitable alternative for the system. |
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