Liquid manure in action
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Technical Data
Start up date: June 2007
Production Capacity: 499 kW electricity
Input: Corn and liquid manure
Heat usage: heating of apartments
A typical dairy farm in East Germany, Lichtenberger Agrar GmbH & Co. KG, has 900 dairy cows and 300 heifers on its operation. Because of this, it naturally produces significantly large amounts of liquid manure that is used wisely. Every day around 80 m³ (~ 21.000 gal) of manure is fed to the in-house biogas plant. In addition, an average of 17 tons of corn silage is added. The energy produced in the biogas plant drives a combined heat and power plant (CHP). The heat from the plant is used to provide hot water and to heat the employee and dairy facilities.
Additionally, 48 apartments benefit from the heat of the CHP year long. This combined concept avoids not only environmentally harmful methane emissions from the liquid manure, but at the same time reduces fossil fuel usage. A further positive aspect is that biogas plant treated liquid manure is nearly odorless. This is an all around good design.
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Case studies 
