Reducing H2S and H2O content will significantly improve biogas quality. Thus, this study aims to design and manufacture a biogas purification technology system. These experiments were conducted at the Department of Agricultural Engineering, Faculty of Agriculture, Damietta University, Egypt, in 2021. Biogas desulphurisation experiments were conducted by H2S scrubber using two different depths of steel wool bed of (300 and 500 mm) with different biogas flow rates of (2,3,4,5,6,9,10 and 12 L/min). Desulphurised biogas was passed through a CO2 scrubber for purification and then dried the biogas product throughout dehydrator to remove water at different pressures of (1, 2, 3, and 4 bar) and different gas flow rates of (2,3,4 and 6 L/min) and different water flow rates of (4,6,8 and 12 L/min). The desulfurization experiment results show that when the depth of the steel wool bed is 500 mm and the biogas flow rate is 6 L/min, the highest H2S removal efficiency is 95.40%. The highest weight of the water removed from the purified biogas using silica gel was 0.449 g at a biogas pressure of 1 bar, biogas flow rate of 6 L/min, and water flow rate of 12 L/min.