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A digestion system is not overly complex, as will be seen
with the following photos. A proper design never loses sight of the realities of
the farm. Those realities include site layout AND the agricultural
economy. The objective of the farm is to sell animal protein either as meat or
milk. Manure management is the needed activity at the end of the production
process. Few resources are available to perform manure management, in spite of
the requirement to do so in an environmentally acceptable fashion.
A system designer must concentrate on simplicity of
construction, ease of operation and reliability.
The following photos are of a heated plug flow dairy
manure digester.
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