plug flow digester
A plug flow digester has no means of agitation. The term "plug flow" derives from the fact that the manure in principle flows through the digester vessel as a "plug," gradually being pushed toward the outlet as new material is added. In fact, the situation is more complicated and this and some parts of the manure travel faster than others on their way through the vessel, or may even settle or float and remain in the digester.
Related category• BIOENERGY AND BIOFUEL
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