Dry fermentation is not only suitable for the fermentation of organic waste material: Because of its relatively low investment and maintenance costs, combined with low susceptibility to damage, dry fermentation becomes more and more interesting for biogas plant operators from agricultural background - especially if not enough slurry is available for liquid fermentation. Possible substrates can be, among others, garden waste or silages.
Experiments for dry fermentation
However, dry fermentation has higher demands on the fermentation process itself: The buffering capacity of slurry is missing, the organic loading rate in the fermenter is very high, and not every substrate is suitable for dry fermentation.
Regular controls and analyses are therefore even more important to avoid troubles in the fermentation process on time.
The biogas experts of inocre® offer tests for dry fermentation in their in-house laboratory fermenters. The substrate can be percolated in different intervals. Analysis can give information about the fermentation biology, enabling to react on time on disruptions e.g. acidification of the percolate. At the same time, the methane yield of new substrate mixtures can be detected. Gas production and composition are logged continuously, allowing to draw conclusions on the fermentation process.
The biogas services of inocre® also include batch fermentation tests, continuous fermentation tests and the determination of the digestate potential.
Fritzmeier Umwelttechnik GmbH & Co. KG dept. inocre® at EuroTier 2012 in Hannover: hall 24 booth A18
