title: Denitrifying sulfide removal process on high-salinity wastewaters.
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(0)), 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(0) 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.
authors.affiliation: College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China, liuchunshuang723@126.com.
authors.forename: Chunshuang
authors.initials: C
authors.lastname: Liu
authors.forename: Chaocheng
authors.initials: C
authors.lastname: Zhao
authors.forename: Aijie
authors.initials: A
authors.lastname: Wang
authors.forename: Yadong
authors.initials: Y
authors.lastname: Guo
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
mesh_terms: D000085:Acetates / Q000378:metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D058440:Denitrification; D059013:Microbial Consortia; D009566:Nitrates / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D054712:Salinity; D012722:Sewage / Q000737:chemistry / Q000382:microbiology; D013440:Sulfides / Q000378:metabolism*; D013455:Sulfur / Q000378:metabolism; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology*
chemical_list: D000085:Acetates; D002245:Carbon Dioxide; D009566:Nitrates; D009584:Nitrogen; D012722:Sewage; D013440:Sulfides; D013455:Sulfur; D062065:Wastewater