Download Engines for Biogas (1988) (GTZ-Gate) (introductory

Humanity Development Library: Document text
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Digester pit temperature ºC
Fermentation period days
Quantity of material added
The material must be added in the form of a free-flowing liquid, or else blockages will occur,
However, if it is diluted too much, gas production will be reduced.
Generally speaking, the solid material must be mixed with at least the same volume of water.
An accurate calculation depends on the analysis of the material and should be based on the list shown
below.
Typical mixing ratios
Cow dung, fresh: water
1:0.5
Cow dung, superficially dry: 1:1
water
Horse and sheep's dung: water 1:1
Green refuse: water
1:0.5 to 1:2
Quantity of material added per day:
162 af 164
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