Análisis del potencial de aprovechamiento de residuos orgánicos del Mercado Mayorista de Riobamba en procesos de codigestión anaerobia para la producción de biogás.

Abstract

The potential of biogas production was analyzed from the combination of 2 types of waste: organic waste and residual sludge, using a simulation model of anaerobic co-digestion processes, to later evaluate the technical feasibility of Electric power production. For this we selected the wholesale market of Riobamba as a place of study, here was recorded the production of organic waste from the 13 commercial ships of the market, resulting in an approximate daily production of 3350 kg waste Organics between fruits,vegetables, vegetables and like. Representative samples of organic waste and digested sludge were taken from Penipe wastewater treatment plant, which were transported to the bromatology and water quality laboratories of the ESPOCH; The respective mixtures of sample were made S1: 25% -75%, S2: 50% -50% and S3: 75% -25%, to which the physical analyses were made-chemical and bromatological. The results obtained were adapted to be entered in the PSM simulation model, resulting in each 1000 kg of substrate 146, 163, 196 kg was produced, the production yield was assessed from the amount of volatile solids contained Had a production of 0.39, 0.44 and 0.42 m3 CH4 / kg SV respectively. Observing that the performance was not optimal because they did not have adequate humidity, a theoretical dilution of each substrate was carried out, which resulted in a production of S1-70: 0.82m3 CH4 / kg SV, S2-70: 0, 85m3 CH4 /kg SV and S3-70: 0.90m3 CH4 / kg SV; The result was that S3-70 has the best methane production range, so it was selected to calculate the production of electrical energy, having an approximate production of 60 kw / day. It is recommended to carry out an analysis of the technical and economic feasibility of the implementation of a large-scale anaerobic co-digestion system.