Question

floating cover placed over slurry in biogas plant? is it in digester?​

Answer 1

Answer:

a) The biogas plant consists of concrete tank (10 - 15 ft deep) in which bio-wastes are collected and slurry of dung is fed. b) A floating cover is placed over they slurry, which keeps on rising as the gas is produced in the tank due to microbial (methanogens) activity.

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Answer 2

Under controlled settings, a biogas digestor harnesses spontaneous anaerobic breakdown of organic materials.

Floating drum digester:

• An underground digester (cylindrical or dome-shaped) and a moving gas-holder comprise floating-drum plants.
• The gas-holder floats directly on the fermentation slurry or in its own water jacket.
• The gas is collected in a gas drum, which rises or falls according to the amount of gas stored.

What exactly does a digester do?

• In a process known as anaerobic digestion, microorganisms break down organic compounds such as cow manure or food waste.
• This occurs in a digester, which is a closed tank with no oxygen.

Biomass digesters:

• The biomass, trash, or wastewater feedstocks are fed into the anaerobic digester, where natural bacteria feed on the organic materials, producing simpler intermediary molecules that are eventually transformed into mineralized nutrients and biogas.

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