How to operate a small scale biogas digester system

Biodigester operates like a stomach. Everything goes in will have to go out after fermentation. The amount that goes in is about the same with the one you draw out. It has to be systematic and consistent to ensure the digestion system works properly all the time. According to a simple formula I posted previously in this group, for this 160 liter digester, the size of feeding is about 160/50 or to make it simple 150/50 equals to 3 liter. So for 160 liter system, it is advisable to feed 3 liter at a time. To follow a rule of thumb or common practice in feeding you have to apply 1:1 ratio. Best is to mix 1.5 kg of organic waste to 1.5 liter of water or total up to 3 liter there you have 3 liter feed in 1:1 ratio. Next step is taking out 3 liter of existing slurry out as an excretion from the system and add 3 liter of liquid waste into the system as its fresh feed. To ease the process its best if you prepare a 3 liter bucket to be used for the purpose so that you wont just simply do things without knowing the exact volume and jeopardize the stabiliy and equilibrium of the process in years to come.

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