Explain the components of a biogas plant with a neat labeled diagram.

Explanation

(a) The biogas plant consists of a concrete tank (0 - 5 ft deep) in which bio-wastes are collected and slurry of dung is fed.
(b) A floating cover is placed over the slurry, which keeps on rising as the gas is produced in the tank due to microbial (methanogens) activity.
(c) The biogas plant has an outlet, which is connected to a pipe to supply biogas to nearby houses.
(d) The spent slurry is removed throughanother outlet and may be used as fertilizer.
(e) The biogas thus produced is used for cooking and lighting

Detailed Answer:
A Biogas plant consists of
(a) A concrete tank
(b) Floating cover
(c) An outlet
The concrete tank (10-15 feet deep) collects bio-wastes and slurry of dung.
A floating cover is placed over the slurry, which keeps on rising as the biogas is produced.
An outlet which is connected to a pipe to supply biogas.
An outlet to remove spent slurry (used as fertilizer).
Indian Agricultural Research Institute (IARI), Khadi and Village Industries Commission (KVIC) developed technology of biogas production in India.