Biogas usage
Practical Action
The Chinese biogas digester
The bio digester and the composter are made together using cement and bricks and it is a
permanent structure. The biogas is collected in the upper chamber and the waste
decomposes in the lower chamber. Just as in the Indian digester this has two drains to feed
waste and to collect the composted waste.
Input for raw
material
P.V. C pipe
Upper concrete ring
Manhole
Output for removing
digested waste
Entry pipe for
raw material
Digester
Bottom
concrete ring
Removal pipe for
digested
material
In both the Indian and Chinese digesters the waste needs to be:
Put in daily.
Therefore the best option is to connect the digester to
the cattle shed or pigs sty.
In both methods the toilets that
we use daily can also be used to
produce biogas. This gives extra
sanitation advantages.
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