The “BIO-Sulfex” biofilter of ATZ-EVUS removes hydrogen sulfide from biogas in a biological way. Hydrogen sulfide causes massive problems during power generation from biogas in a power plant, e.g. corrosion of engines and heat exchangers, and thus causes frequent and therefore expensive engine oil changes. The BIO-Sulfex module is placed between the digester and the power-plant and warrants a cost-effective, reliable and fully biological desulfurization. In the cleaned gas concentrations of less than 100 ppm can be achieved. Power-plant manufacturers usually demand less than 500 or less than 200 ppm. At present, several plants with biogas flow rates between 20 and 350 m3/h are in operation.
Microbiological removal of hydrogen sulfide from biogas by means of a separate biofilter system: experience with technical operation
D. Schieder, P. Quicker, R. Schneider, H. Winter, S. Prechtl, M. Faulstich; Microbiological removal of hydrogen sulfide from biogas by means of a separate biofilter system: experience with technical operation. Water Sci Technol 1 August 2003; 48 (4): 209–212. doi: https://doi.org/10.2166/wst.2003.0256
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