title: Simple biogas desulfurization by microaeration - Full scale experience.
abstract: Hydrogen sulfide in biogas is common problem during anaerobic treatment of wastewater with high sulfate concentration (breweries, distilleries, etc.) and needs to be removed before biogas utilization. Physico-chemical desulfurization methods are energetically demanding and expensive compare to biochemical methods. Microaeration, i.e. dosing of small amount of air, is suitable and cost effective biochemical method of sulfide oxidation to elemental sulfur. It has been widely used in biogas plants, but its application in anaerobic reactors for wastewater treatment has been rarely studied or tested. The lack of full-scale experience with microaeration in wastewater treatment plants has been overcome by evaluating the results of seven microaerobic digesters in central Europe. The desulfurization efficiency has been more than 90% in most of the cases. Moreover, microaeration improved the degradability of COD and volatile suspended solids.
authors.affiliation: Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czechia.
authors.forename: P
authors.initials: P
authors.lastname: Jeníček
authors.affiliation: K&K Klatovy, Zlatnická 33, 339 01, Klatovy, Czechia.
authors.forename: J
authors.initials: J
authors.lastname: Horejš
authors.affiliation: Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czechia. Electronic address: krayzell@vscht.cz.
authors.forename: L
authors.initials: L
authors.lastname: Pokorná-Krayzelová
authors.affiliation: Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czechia.
authors.forename: J
authors.initials: J
authors.lastname: Bindzar
authors.affiliation: Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czechia.
authors.forename: J
authors.initials: J
authors.lastname: Bartáček
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D006862:Hydrogen Sulfide; D062065:Wastewater / Q000737:chemistry
chemical_list: D056804:Biofuels; D006862:Hydrogen Sulfide; D062065:Wastewater
keywords: Anaerobic digestion; Biogas; Hydrogen sulfide removal; Microaeration; Sludge stabilization