In today's era, due to the depletion of fossil fuels such as oil, gasoline, etc., their expensiveness and the harm caused by their use, such as environmental pollution, have made people to use renewable energy of biofuel. Biogas, like solar and wind energy, is a renewable and environmentally friendly energy source that can be produced from raw materials and waste recycling. Biogas is produced by anaerobic digestion or fermentation of biodegradable materials such as manure, sewage, municipal waste, green waste, plant material, and agricultural products. Extraction of biogas from anaerobic processes of sewage, in addition to energy production, can also be effective in odor control. One of the ways in which a lot of gas can be obtained is wastewater treatment using the UASB method. This method is used to treat industrial wastewater with a high organic load, which has a high removal efficiency, and in this method, a lot of methane, hydrogen sulfide, and carbon dioxide are produced, which, if not properly collected and disposed of, cause odor production. And an explosion occurs.