POTENTIAL UTILIZATION OF ORGANIC WASTE LEACHATE INTO BIOGAS USING ANAEROBIC DIGESTION PROCESS

• Main Author: Imtyaz, Zahrani
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/66967
• Institution: Institut Teknologi Bandung

The high generation of unprocessed organic waste can create new problems with leachate production. In addition to the increasing waste problem, the problem that arises at the same time is that the need for fuel oil (BBM) is also increasing so another alternative energy is needed that can replace the need for fossil fuels. One alternative energy that can be substituted with fossil fuels is biogas which can be produced from the anaerobic digestion process. In this study, testing was carried out using an anaerobic digester reactor with a laboratory scale capacity of 14 L to determine the amount of biogas produced from the substrate, namely organic waste leachate (artificial leachate) mixed with three types of starter, namely cow rumen, IPL anaerobic sludge, and fecal sludge with a ratio of 1:1. In this study, the physical and chemical characteristics of each substrate and starter were also determined and the biogas potential was determined using the characteristics test results and simplification equations for anaerobic reactions from the ultimate analysis of the secondary substrate and starter data. In addition, this research calculates the potential for biogas production on a field scale which is limited to the landfill and the market. Based on the results of characteristic tests in the laboratory, the parameter values for BOD, COD and TSS were high at 1556.06 mg/L, 4769.15 mg/L, and 121 mg/L where these results exceeded the leachate quality standards based on the Regulation of the Minister of the Environment. and Forestry No. 59 of 2016. In addition, characteristic tests for starters (cow rumen, IPL anaerobic sludge and fecal sludge) also showed high characteristics of several parameters such as COD, BOD, TSS and phosphate values. Based on the calculation of the biogas production potential using the ultimate analysis and the simplification equation for the anaerobic reaction, it is found that the biogas potential of each organic waste leachate substrate and starter (cow rumen, fecal sludge, anaerobic sludge) is 0.14 m3, 0.14 m3, respectively. 0.12 m3, and 0.95 m3. In addition, biogas production was obtained for each mixing of leachate with rumen, fecal sludge and anaerobic sludge, respectively, at 0.012 L/day, 0.0126 L/day, and 0.0059 L/day. Biogas production on a laboratory scale produced is smaller than the theoretical calculation. For field-scale biogas potential, the average biogas production produced from several landfills is 2.45 m3/day or as much as 2450 L/day equivalent to 7.571.42 L from substrate feed in the laboratory to be implemented on a field scale. In addition, by taking into account the generation of organic waste in the Gedebage Market reaching 8,996.62 kg/day, an estimate of the leachate generation is obtained as much as 9.5 m3/day so that the biogas potential from the market's organic waste leachate generation reaches 0.82 m3/day with a large amount of gas. methane 0.57 m3/day by calculating the COD value of organic waste leachate.