Unit 3.3: Low Rate Systems

Background and Guiding Questions

A low rate system is defined as a system where feedstock stays in a digester for an extended period of time. Feedstocks in low rate systems typically spend more time in the digester to maximize biogas output. Examples of these types of systems include complete mix and plug flow digesters.

Guiding Questions

  • What are examples of low rate digesters?
  • What are the advantages and disadvantages of a low rate digester?

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