Microaeration for hydrogen sulfide removal in UASB reactor

作者：Krayzelova Lucie^*; Bartacek Jan; Kolesarova Nina; Jenicek Pavel

来源：Bioresource Technology, 2014, 172: 297-302.

DOI：10.1016/j.biortech.2014.09.056

• Microaeration
• UASB reactor
• Elemental sulfur accumulation
• Sulfur balance
• Hydrogen sulfide removal

The removal of hydrogen sulfide from biogas by microaeration was studied in Up-flow Anaerobic Sludge Blanket (UASB) reactors treating synthetic brewery wastewater. A fully anaerobic UASB reactor served as a control while air was dosed into a microaerobic UASB reactor (UMSB). After a year of operation, sulfur balance was described in both reactors. In UASB, sulfur was mainly presented in the effluent as sulfide (49%) and in biogas as hydrogen sulfide (34%). In UMSB, 74% of sulfur was detected in the effluent (41% being sulfide and 33% being elemental sulfur), 10% accumulated in headspace as elemental sulfur and 9% escaped in biogas as hydrogen sulfide. The efficiency of hydrogen sulfide removal in UMSB was on average 73%. Microaeration did not cause any decrease in COD removal or methanogenic activity in UMSB and the elemental sulfur produced by microaeration did not accumulate in granular sludge.

• 出版日期2014-11