Name: Advantages and Disadvantages of Fossil Fuels
Uploaded: 2019-07-19
Duration: 5 min 44 s
Description: In this module, we will refresh our knowledge of fossil fuels. We will also learn about the various advantages and disadvantages of the excessive use of foss...

Question

Draw a schematic diagram of the biogas plant and explain its working.

Accepted Answer

The below figure shows the details of a floating gas-holder type biogas plant.

It consists of a well-made of concrete which is called the digester tank. It is divided into two chambers with a partition wall. One side has the inlet, from where slurry is fed into the tank. The tank has a cylindrical holder made of stainless steel that floats on the slurry and act as the storage for the gas produced. Since the holder floats on the slurry, this type of plant is named as floating gas holder type bio-gas plant. The slurry is made to decompose for about $50$ to $60$ days. As more gas is made by the anaerobic decomposition, the pressure inside the gas holder increases. The gas can be taken out through an outlet pipe. The decomposed matter expands and overflows into the next chamber of the tank. This is then removed by the outlet pipe of the overflow tank and is used as manure for agricultural purposes. To get a continuous supply of biogas, fresh slurry is added to the digester tank periodically.

Draw a schematic diagram of the biogas plant and explain its working.

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