? Principle : Biogas is produced as a result of anaerobic fermentation of biomass in the presence of water.
Working : 1. formation of slurry by mixing of cow dug . 2. The fermentation of slurry starts in the digester and biogas is formed 3.increase in the volume of slurry in inlet and out let .?? 4.If you want to use the biogas, you can open the valve
