Enhanced performance of denitrifying sulfide removal process under micro-aerobic condition
Journal
Journal of Hazardous Materials
Journal Volume
179
Journal Issue
1月3日
Pages
1147-1151
Date Issued
2010
Author(s)
Abstract
The denitrifying sulfide removal (DSR) process with bio-granules comprising both heterotrophic and autotrophic denitrifiers can simultaneously convert nitrate, sulfide and acetate into di-nitrogen gas, elementary sulfur and carbon dioxide, respectively, at high loading rates. This study determines the reaction rate of sulfide oxidized into sulfur, as well as the reduction of nitrate to nitrite, would be enhanced under a micro-aerobic condition. The presence of limited oxygen mitigated the inhibition effects of sulfide on denitrifier activities, and enhanced the performance of DSR granules. The advantages and disadvantages of applying the micro-aerobic condition to the DSR process are discussed. ? 2010 Elsevier B.V.
Subjects
Denitrifying sulfide removal
EGSB
Inhibition
Micro-aerobic
SDGs
Type
journal article