[Digestion] water manure rate

[Jaime Marti Herrero]

Hi everybody.
 
In the last moths im meeting people who is installing tubular biodigesters and they are using 1:2 manure:water rate to feed the biodigesters. From five years ago i started using 1:4 rate (recomended by Lylian Rodriguez and Preston), but from two years ago im using 1:3 because the in some places the are not that much water for 1:4.
 
the reason tu use 1:3 or 1:4 is to avoid the formation of the foam that stop the production of biogas. But if really you can work wiyh a lower rate (1:2) without problems with the foam, this will be a great issue, because the volume required wil be lower and the cost os materials and biodigester as well.
 
So please, have you got good expiriences with low rate manuere:water for long time with out foam?
 
thanks everybody
we keep in contact
jaime
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