Optimal Organic Loading Rate for Biogas Production System for Soybean Meal Fed Black Soldier Fly Processing Wastewater
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Abstract
This research was to study the optimum Organic Loading Rate (OLR) for wastewater treatment of the Black Soldier Fly Larvae (BSFL) processing. The inoculum was sludge from the biogas system in a pig farm. The biogas system in this study was a floating drum digester mixed with biogas recirculation. The OLRs were added in the biogas reactor as 1.00, 2.00, and 3.00 kgCOD/m3day, respectively. The hydraulic retention time (HRT) was 20 days. The experiments operated on the ambient temperature. Biogas volume and methane content value were measured during the operations. The result showed that the operation of different OLR 1.00, 2.00, and 3.00 kgCOD/m3day, with mixing could produce average cumulative biogas volume of 1,214.17, 1,716.04, and 1,714.48 Lite, respectively. The average methane content was 66.64%, 69.02%, and 67.22% respectively. The OLR of 2 kgCOD/m3day was the optimum organic loading rate. The COD removal efficiency was 66.29%, the total solid removal was 65.95% and the volatile solid removal was 81.15%. This was the most suitable and efficient condition for treating the BSFL wastewater. It can be further studied in larger biogas systems. It could be possible to decrease the impact of wastewater and water pollution on the environment.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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