TanglewoodTechnology:
Anaerobic Digestion

 

What is Anaerobic Digestion?

In the most simple of terms, Anaerobic Digestion is the breakdown of organic material in the absence of oxygen.

How it works: The Basics

Organic material is broken down in a vessel in the absence of oxygen by bacteria.

As the organic material is broken down (the digestion process) biogas is produced.  Biogas contains approximately 60-65% methane, 30-35% CO2, and trace amounts of hydrogen sulfide and other gasses.

The biogas is collected and the methane isolated for use in  a CHP Generator.

The CHP produces electricity to be utilized to power the facility,  the balance can be sold back to the grid through net-metering agreements.

Heat that is produced through the CHP is used to heat the facility as well as maintain the digester temperature.

The digestion process produces both a liquid organic digestate that can be re-entered into the system to aid the digestion process or used as a liquid organic fertilizer.  Solid residuals can be used as an organic compost material.  Operating a thermophilic system ensures  99.99% pathogen free co-products.

 

The Anaerobic Digestion Process

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