A mixture of cow dung and water is taken from the cowshed by bucket, carried up the steps of the bio-gas plant, and loaded into the top tank.The weight of this dung slurry pushes it down a pipe to the bottom of the digester. As the dung rots, it gives off methane gas . This bubbles up into the floating drum, which rises as it gets fuller. The weight of the drum pushes the gas though the gas pipe to the kitchen. Turn the cooker on, and out comes the gas. The manure from ten to fifteen cows supplies enough gas to cook for large family.
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