title: High-rate denitrifying sulfide removal process in expanded granular sludge bed reactor.
abstract: An expanded granular sludge bed (EGSB) reactor was adopted to incubate bio-granules that could simultaneously convert 4.8 kg-Sm(-3) d(-1) of sulfide in 97% efficiency; 2.6 kg-Nm(-3) d(-1) of nitrate in 92% efficiency; and 2.7 kg-Cm(-3) d(-1) acetate in 95% efficiency. Mass balance calculation of sulfur, nitrogen, and carbon over the EGSB reactor confirmed the performance results. This noted reactor performance is much higher than those reported in literature. Stoichiometric relation suggests that the nitrate was reduced to nitrite via autotrophic denitrification pathway, then the formed nitrite was converted via heterotrophic denitrification pathway to N(2).
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Chen
authors.forename: Aijie
authors.initials: A
authors.lastname: Wang
authors.forename: Nanqi
authors.initials: N
authors.lastname: Ren
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
authors.forename: Juin-Yih
authors.initials: JY
authors.lastname: Lai
mesh_terms: D052818:Autotrophic Processes; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D002244:Carbon; D052836:Heterotrophic Processes; D009584:Nitrogen / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*; D013440:Sulfides / Q000302:isolation & purification*; D013455:Sulfur
chemical_list: D012722:Sewage; D013440:Sulfides; D013455:Sulfur; D002244:Carbon; D009584:Nitrogen