Can anyone please describe in more detail or a diagram how the Sao Paolo works or is built.
the principle behind the Sao Paolo is hydrostatic preassure. We have a normal IBC digester with a feeding and outlet pipe of the height of 2 IBCs above each other.
The gas storage system is made of 2 IBCs sitting above each other. The lower one is filled with water. When Biogas gets into the lower storage IBC it presses the water up into the second one. Hence the other way round the water could be used to press the gas out of the storage.
Hope that explains it a little more.
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