5 K.M away from Manipal near a village named Parkala we
found a Biogas plant which is used by a family of 5 in a small scale. We did
not witness any usage of L.P.G by the family. Sufficient amount of gas is
obtained from the cowdung of two cows
for a family of 5.
A 9*9 feet land is dug.
With a gap of 7 feet in the center a wall is constructed surrounding the
land dug. The wall is constructed in 4 different layers so that there is
no leakage of gas. A drum is present in the gap. The function of the drum
is to insert weight on the gas present underneath so that the flow of gas
is faster to the household.
The study of a nearby biogas plant was incorporated in our project as TGCC EN-09. The team gained a lot of learning experience from this set up.
Various improvements that were suggested are as follows:
1. The higher calorific value of the input results in
better quality of gas thus produced. From the point of view of conversion of feedstock
into methane, this system is 400 times more efficient than conventional system.
2. The conventional biogas plant produces 250 gms of biogas
from 40 kgs of excreta in 40 days. In contrast, the new plant requires just 1
kg of sugar or starch – in the form of waste food from household or hotels,
spoilt grain, overripe fruit, non-edible seeds, kitchen waste, etc. – to
produce the same quantity of methane in just 24 hours.
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