Diagnostic monitoring parameters for biogas plants

  • biogas-and methane yield
  • FOS/TAC-analysis
  • fermentation acids
  • nutrients : minerals, trace elements, dry matter, ammoniacal nitrogen
  • pollutants : mykotoxins, heavy metals and antibiotic agents
  • microbiological examinations according to regulation (EU) Nr. 142/2011, Anhang V Kapitel III Abschnitt 3
      ......and further microbiological parameters: virus, fungi
  • Monitoring the cell counts of different groups of fermenter microorganisms with fluorescence-in-situ-hybridization ( relationship germ count: methane bacteria))

The input material has great positive as well as negative potential for the plant because the whole microbial process is affected by its quality.

Also the fermenter content should be monitored regularly. That way change in composition of the bacterial population can be detected early and resulting process disturbances may be detected or prevented. Here, methanogenic bacteria (methane bacteria, archaeabacteria) and their relationship to the general germ count are in the focus.

The use or sale of the fermentational residue as high-quality fertiliser is an additional financial incentive for many biogas plant operators. But keep in mind that one fermentational residue is not like another. Through quality analysis and its documentations you may be able to influence pricings to your benefit.

Special observance to should be applied when substrate is changed or efficiency is increased.

Which parameters and the frequency of analysis must be determined for the individual plant!