Diseño de un biodigestor anaerobio de tipo taiwanés para la producción de biogás a traves del estiércol de ganado bovino para la finca “Castillo de Altura”, en la parroquia San Juan, provincia Chimborazo

Abstract

The Castillo de Altura farm uses the manure of its bovines only to fertilize the property's soils, and it has no other use, so its waste management can be improved and used in other fields. This study aimed to generate biogas using manure from the Castillo farm in the San Juan parish, Chimborazo province. The methodology used was descriptive; it began with the physical-chemical characterization of the manure in the agrar PROJECTK and SAQMIC laboratories under Standard Methods. The liquid displacement technique was used for the biogas measurement, and the methane generation was verified with the flame test. Devices were used to monitor the internal and external temperature of the biodigester. With this methodology, it was possible to obtain an adequate C//N ratio of 20.1. The BOD and COD were 57,000 mg/L and 95,000 mg/L and had a pH of 8.93 before fermentation. The monitoring and recording of the temperature followed the retention time of 58 days calculated. The temperatures ranged from 25 to 57°C from 8:00 am to 4:00 pm and below 10 °C from 11:00 pm to 4:00 am. The pH ranged from 6 to 6.8. After 58 days, the BOD and COD were re-evaluated, obtaining 26,000 mg/L and 55,200 mg/L, there being a reduction and evidencing the degradation of organic matter, the pH stabilized at 7.02. The possibility of generating biogas and methane from day 58 in the pilot test is concluded. The calculation of the dimensioning of the biodigester was a total volume of 14.15 m3, a length of 9.79 m, a roll width of 2.5 m and a diameter of 1.6 m.