To my
understanding 1000 liter/40 = 25 liter. So it is advisable to feed 25
liter of food waste mixed with water. It means, your food waste is
already included in that 25 liter. I have read from this elsewhere, the
maximum ratio of food waste to water
you can apply is 1:1 (though to me its too much for the microbes to
handle). Roughly the maximum weight of food waste you can put is 12.5 kg
in which you add another half of water to add up to 25 liter as total
mixed. However its up to you what level of total solids you want to
practice by reducing the food waste within that 25 liter. The more
effluent you take out from the digester, the more bacteria you will
discard and that may affect whole digestion process and becoming slower
in producing gas.
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