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- Title
Denitrifying sulfide removal process on high-salinity wastewaters.
- Authors
Liu, Chunshuang; Zhao, Chaocheng; Wang, Aijie; Guo, Yadong; Lee, Duu-Jong
- Abstract
Denitrifying sulfide removal (DSR) process comprising both heterotrophic and autotrophic denitrifiers can simultaneously convert nitrate, sulfide, and acetate into nitrogen gas, elemental sulfur (S), and carbon dioxide, respectively. Sulfide- and nitrate-laden wastewaters at 2-35 g/L NaCl were treated by DSR process. A C/N ratio of 3:1 was proposed to maintain high S conversion rate. The granular sludge with a compact structure and smooth outer surface was formed. The microbial communities of DSR consortium via high-throughput sequencing method suggested that salinity shifts the predominating heterotrophic denitrifiers at <10 g/L NaCl to autotrophic denitrifiers at >10 g/L NaCl.
- Subjects
DENITRIFICATION; SULFIDES analysis; WASTEWATER treatment; SALINITY; CARBON dioxide analysis; HETEROTROPHIC bacteria
- Publication
Applied Microbiology & Biotechnology, 2015, Vol 99, Issue 15, p6463
- ISSN
0175-7598
- Publication type
Article
- DOI
10.1007/s00253-015-6505-5