Diseño Inclusivo Personalizado (DINPER)
http://hdl.handle.net/10259/4402
2024-03-29T10:41:28ZManual impresión 3D. Curso 2022-2023
http://hdl.handle.net/10259/8853
Manual impresión 3D. Curso 2022-2023
Pérez Sevilla, Malena; Gómez Casado, Jorge; Sánchez Ortega, Pedro L.
El manual de impresión 3D FDM es una guía exhaustiva diseñada para usuarios de todos los niveles, ofreciendo un conocimiento profundo sobre la tecnología de “Fused Deposition Modeling”. Comienza con una introducción a la impresión 3D FDM, explicando sus principios fundamentales y aplicaciones. Se detallan instrucciones paso a paso para la preparación de diseños 3D, incluyendo la selección del software adecuado y consejos de diseño específicos para FDM. Además, se proporciona una amplia información sobre los materiales de impresión, enfocándose en los distintos tipos de filamentos y sus usos. El manual cubre la configuración y calibración de la impresora, preparativos para la impresión, y el proceso de impresión mismo, junto con estrategias para monitorear y resolver problemas comunes. Finalmente, se abordan técnicas de post-procesamiento para mejorar el acabado de las piezas impresas, así como consejos para el mantenimiento regular y la seguridad durante el uso de la impresora 3D FDM.
2024-01-01T00:00:00ZComparison of external and submerged membranes used in anaerobic membrane bioreactors: Fouling related issues and biological activity
http://hdl.handle.net/10259/8278
Comparison of external and submerged membranes used in anaerobic membrane bioreactors: Fouling related issues and biological activity
Martínez Díaz, Raquel; Ruiz Pérez, María Olga; Ramos Rodríguez, Cipriano; Cámara Nebreda, José María; Diez Blanco, Victorino
Anaerobic sludge filtration tests were performed with two experimental set-ups equipped with either submerged hollow-fiber membranes or external tubular membranes operated with low crossflow velocity and gas sparging in a gas-lift mode. Particle size distributions, extracellular polymeric substance concentrations, methanogenic activity, reversible and irreversible fouling rates, and chemical cleaning efficiency were all studied and compared. An increase in the percentage of smaller particles and a decrease in the concentration of volatile suspended solids in the external membrane set-up were observed. Both soluble protein and soluble polysaccharide concentrations were also higher in the external filtration. Operating at 12–15 L/m2 h for 7 days, the total resistance of the external membrane reached 9.3 × 1012 m−1, while the resistance of submerged membrane reached 1.1 × 1012 m−1 despite operating at 15–25 L/m2 h for 12 days. Finally, the type of fouling and the efficiency of chemical cleaning also differed in both configurations.
2020-07-01T00:00:00ZA novel jet-loop anaerobic filter membrane bioreactor treating raw slaughterhouse wastewater: Biological and filtration processes
http://hdl.handle.net/10259/8277
A novel jet-loop anaerobic filter membrane bioreactor treating raw slaughterhouse wastewater: Biological and filtration processes
Diez Blanco, Victorino; Cámara Nebreda, José María; Ruiz Pérez, María Olga; Martínez Díaz, Raquel; Ramos Rodríguez, Cipriano
Results from raw slaughterhouse wastewater treatment in a new jet-loop Anaerobic Filter Membrane Bioreactor (AnFMBR) are presented. The innovation consists in integrating an attached growth anaerobic reactor and a filtration tank as an external loop gas-lift bioreactor, taking advantage of the gas-lift effect caused by the gas sparging used for fouling mitigation. A jet-loop AnFMBR pilot plant was operated for 18 months with a hydraulic retention time of 19.5–21.3 h, a solid retention time of 60 d and organic loading rates between 3.5 and 7.4 kg COD/m3·d, depending on the wastewater concentration, with peaks of up to 10.9 kg COD/m3·d. Organic matter removal efficiency was maintained between 92 and 97%. Most of the biomass in the jet-loop AnFMBR, 82%, was retained by the carrier material so the membrane was in contact with low concentration biomass suspension.
Effects of different backwash scenarios and filtration fluxes on reversible and irreversible fouling rates were studied by short-term and mid-term assays, using Box-Behnken experimental designs. Fouling consolidation due to the fouling layer compression was the main cause of irreversible fouling. Pilot-scale results have shown that jet-loop AnFMBR is a promising technology for real scale complex wastewater treatment.
2021-03-01T00:00:00ZA novel anaerobic filter membrane bioreactor: prototype start-up and filtration assays
http://hdl.handle.net/10259/8271
A novel anaerobic filter membrane bioreactor: prototype start-up and filtration assays
Diez Blanco, Victorino; Iglesias, A.; Cámara Nebreda, José María; Ruiz Pérez, María Olga; Ramos Rodríguez, Cipriano
Anaerobic digestion allows efficient treatment of high loaded wastewater, and membrane technology allows obtaining high quality effluents with complete biomass retention. However, high biomass concentration interferes with membrane fouling. In the present work, a new bioreactor that integrates an attached biomass anaerobic culture on a fixed bed and a submerged membrane has been started up. The recirculation between the digestion and filtration chambers is coupled to the gas-lift effect of the bubbling employed for the scouring of the membranes, avoiding the use or electromechanical pumps that damage the suspended biomass. The support material retains the biomass in the digestion tank despite the downwards flow, avoiding the submerged membrane contacting with a high concentrated suspension. This novel system, called an anaerobic filter membrane bioreactor was immediately started up, achieving chemical oxygen demand (COD) removal efficiencies of 96% at an organic loading rate (OLR) of 7 kg COD/m3·d. In order to select filtration flux, specific gas demand and filtration cycle duration, the results of 15 short term assays, eight hours for each one, is presented for fluxes between 15.7 and 17.7 L/m2·h, cycle duration between 10 and 30 minutes, and three levels of scouring. It was checked that reversible and irreversible fouling were directly related when dTMP/dt > 2.5 mbar/min.
2018-12-01T00:00:00Z