Toxic effect of sulfur compounds on anaerobic biogranule

摘要

The effects of sulfide, sulfite and sulfate on degradation of volatile fatty acid (VFA) in UASB process have been studied by using serum bottle assay and septage-leachate acclimated biogranules. The relative toxicity of the compounds towards methane production and degradation of total Vfa Varied as SO_4~2-S>S~2->SO_3~2-S and SO_4~2-s>SO_3~2-S>S~2-, respectively. The Difference of this order shows the importance of choosing monitoring factor in evaluating the effect Of sulfur compounds on a UASB system. For the individual VFA the effects of sulfur compounds Depended on the types of VFA.