Digestión anaerobia de la fracción orgánica de los residuos sólidos urbanos (FORSU) en dos etapas: efecto de la tasa de escurrimiento y del inóculo
In this work the anaerobic digestion of the organic fraction of urban solid waste (OFUSW) was studied in two stages: in the first stage, the hydrolysis and acidogenesis in anaerobic hydrolytic leach bed (AHLB) reactor in batch and continuous to evaluate the effect of the rate runoff and inoculation;...
| Autor: | |
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | México |
| Institución: | Universidad Autónoma Metropolitana |
| Repositorio: | Repositorio Institucional de la UAM Iztapalapa |
| Idioma: | español |
| OAI Identifier: | oai:bindani.izt.uam.mx:r494vk22c |
| Acceso en línea: | https://doi.org/10.24275/uami.r494vk22c |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/LEM/Residuos orgánicos info:eu-repo/classification/LEM/Basuras y aprovechamiento de basuras info:eu-repo/classification/LEM/Refuse and refuse disposal info:eu-repo/classification/LEM/Digestión anaeróbica info:eu-repo/classification/LEM/Organic wastes info:eu-repo/classification/LEM/Anaerobic digestion info:eu-repo/classification/cti/6 |
| Sumario: | In this work the anaerobic digestion of the organic fraction of urban solid waste (OFUSW) was studied in two stages: in the first stage, the hydrolysis and acidogenesis in anaerobic hydrolytic leach bed (AHLB) reactor in batch and continuous to evaluate the effect of the rate runoff and inoculation; in the second stage, the methanogenesis of the leachate from the AHLB in admixture with municipal wastewater (MWW) in an up flow anaerobic sludge blanket reactor (UASB). In a first study, three runoff rates were evaluated: 0.025, 0.05 and 0.1 L/L r *day in anaerobic hydrolysis reactors of 300 mL in batch. Under these conditions, the best efficiencies in the removal of volatile solids (SV), chemical oxygen demand (COD) and recovery of COD in the leachate were 55 %, 73 % and 45 % respectively, with the runoff rate of 0.1 L/L r *day. In a second study the effect of the inoculum was evaluated, using an anaerobic inoculum and another aerobic inoculum in anaerobic hydrolysis reactors of 300 mL in batch. It was observed that in the presence of inoculum the removal of the VS was not improved since the two treatments showed efficiencies similar to the control (without inoculum), however, the removal of the soluble COD was 13.5 % higher in the treatment without inoculum showing with this that the OFUSW contains hydrolytic and fermenting bacteria capable of carrying out the hydrolysis and fermentation of the OFUSW with high removal efficiencies in the COD (81 %). With the results obtained in batch, the two stages of the anaerobic digestion of OFUSW in continuous reactors were evaluated: the hydrolysis and acidogenesis in a 5 L AHLB and the methanogenesis of the leachates in mixture with MWW in a UASB of 1.4 L, obtaining in the AHLB removal efficiencies of the SV and the C OD of 68 % and 58 %, respectively. The leachates in mixture with MWW at volumetric organic loads of 1, 2.8 and 4.5 g COD/L r *day were fed to the UASB obtaining the highest production of biogas with the highest organic load, being 9 L biogas /L r *day of which 7 L/L r *day corresponded to methane. |
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