Evaluación técnica económica de alternativas para eliminación de los nutrientes fósforo y nitrógeno, de la estación depuradora de aguas residuales (EDAR) Camp de Turia II Comunidad Valenciana
[EN] The wastewater treatment plant of urban wastewater (ARU) - Camp de Turia II, located in the region which is called, provides debugging services in 5 municipalities, such as Riba-roja de Túria, San Antonio de Benagéber, Vilamarxant, L ' Eliana and La Pobla de Vallbona, the total populat...
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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:10251/67091 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/67091 |
| Access Level: | acceso abierto |
| Palabra clave: | Nitrification Denitrification Conventional Nitrificación Desnitrificación Convencional DESASS Estación depuradora de aguas residuales (EDAR) TECNOLOGIA DEL MEDIO AMBIENTE Máster Universitario en Ingeniería Hidráulica y Medio Ambiente-Màster Universitari en Enginyeria Hidràulica i Medi Ambient |
| Sumario: | [EN] The wastewater treatment plant of urban wastewater (ARU) - Camp de Turia II, located in the region which is called, provides debugging services in 5 municipalities, such as Riba-roja de Túria, San Antonio de Benagéber, Vilamarxant, L ' Eliana and La Pobla de Vallbona, the total population equivalent which is equal to 46,170 EDAR I have. The current treatment of the WWTP under study consists of a conventional activated sludge system that removes organic matter, ammonia and suspended solids. The treatment capacity during 2014 was 10,200 m3/d. The current problem is that these purified waters have high content of nutrienes mainly nitrogen and phosphorus, which when discharged into the river Turia undergo alterations such as eutrophication of water bodies causing a drastic reduction of dissolved oxygen in the aquatic ecosystem. That is why the stretch of the Turia River where the spill occurs WWTP is considered as a sensitive area according to the Law of Urban Wastewater in Spain. Directive 98/15/CE Commission 1998 established limit values for nitrogen and total phosphorus parameters that must be taken into account when pouring the resulting effluent into bodies of water eutrophic or prone to eutrofización. Agreement with these requirements, the effluent of the WWTP - Camp de Turia II fails to comply with the quality of discharge and requires more stringent treatment to remove nutrients to meet discharge requirements. The main objective of this Master's Thesis is to analyze different alternatives for implementing the removal of nitrogen and phosphorus in the wastewater treatment plant Camp de Turia II and select the most suitable alternative. Therefore it has made the assessment of the current operation of the wastewater treatment plant have been identified where the processing elements and dimensions to contemplate the adaptation of existing infrastructure in the WWTP with the alternatives proposed. The approach of these alternatives has been classified into 4 groups. The first consists of 2 alternatives based on a conventional activated sludge process more aerobic digestion with biological nitrogen removal and chemical precipitation of phosphorus and consists of: Alternative 1. Modified Scheme Ludzack Ettinger and Alternative 2. Scheme nitrification - denitrification simultaneously. The second group consists of 3 alternatives based on total oxidation process with biological removal of nitrogen and phosphorus chemical precipitation and is made by Alternative 3. Modified Scheme Ludzack Ettinger using the primary clarifiers as anoxic zone, Alternative 4. Scheme Ludzack Ettinger modified using the raft homogenizing as anoxic zone and Alternative Scheme 5. nitrification - denitrification using the raft simultaneous homogenisation as anoxic reactor. The third group consists of a total oxidation process with biological removal of nitrogen and phosphorus, consisting Scheme 6. Alternative nitrification - denitrification using the raft simultaneous homogenizing, 2 primary decanters and one biological reactor as anaerobic zone and the fourth group consists in a process of complete oxidation in a MBR with biological nitrogen removal and chemical precipitation of phosphorus and it is made by Alternative Scheme 7. MBR with anoxic zone using a secondary clarifier as submerged membrane bioreactor. The simulation tool DESASS 7.1 has been used to reproduce the operation of the existing biological treatment and predict the behavior of the alternatives proposed. The results of the optimal conditions in the schemes proposed as alternatives have been achieved after evaluating the effects on different operating parameters and design such as: time cell retention, the internal recirculation of nitrates, the percentage of flow sludge recirculation, the dissolved oxygen concentration in the aerobic reactors, and the dose of ferric chloride. It has also developed economic valuation of technically feasible alternatives involving costs of construct |
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