Diseño de un biodigestor anaerobio para la producción de biogás a partir de las excretas de ganado vacuno, en la finca Los Laureles en la comunidad Flor del Manduro.

Abstract

In the present investigation, an anaerobic bio-digester design for biogas production based upon cow manure was carried out in Los Laureles Ranch from the Flor del Manduro Community. The descriptive-quantitative method was used in this investigation allowing the physical, chemical and microbiological characterization of manure with simple random sampling using Ziploc bags, gloves, rubber boots, lab coat, notebook, marker shovel, bucket, starting the ST, SV analysis, temperature, pH, DQO, DBO5, sulphide, ash, dampness, T. and F. coliforms. Besides, the available manure amount of 118.17 Kg of EF/day of the farm was gotten. The type of bio-digester was chosen with a pre-selection matrix. The Chinese-model structure design was chosen because it is adjusted the best to the conditions of Los Laureles Ranch located on the Puerto Francisco de Orellana Canton. The bio-digester dimensions are: bio-digester tank volume 7.10 m3, internal diameter 2.10 m, external diameter 2.40 m, concrete thickness 0.15 m, height 2.10 m, base border height 0.32 m, final bio-digester height 3.10 m, upper dome height 0.42 m, upper sphere curvature ratio 1.52 m, upper dome volume 0.77 m3, lower dome height 0.26 m, lower sphere curvature ratio 2.25 m, lower dome volume 0.46 m3, cylinder volume 7.27 m3, final bio-digester volume 8.50 m3, biogas store volume 1.4 m3. It will produce 3.78 m3 of daily biogas roughly. Cattle activity is one of the most polluting activities of the natural resources in the sector as it is the most developed. The design and its further construction intend to decrease the environment impact with the technical and environmental handle of the organic waste. It is recommended that the ranch owner construct the bio-digester as a new power option, supplying Los Laureles Ranch with electric power.