title: [Simultaneous removal of sulfide and nitrite by anaerobic bioprocess].
abstract: We studied simultaneous removal of sulfide and nitrite by an anaerobic process in an upflow anaerobic sludge blanket (UASB) reactor. The process could remove sulfide and nitrite 13.4 kg/(m3 x d) and 2.3 kg/(m3 x d), respectively, of the reactor tolerated high influent substrate concentration (880.0 mg S/L and 252.7 mg N/L) with the optimum substrate concentration (460.0 mg S/L and 132.3 mg N/L). It tolerated short hydraulic retention time (HRT) with the optimum HRT of 4 h. The apparent half inhibition concentrations of sulfide and nitrite were 403.9 mg S/L and 120.8 mg NL, respectively, under different influent substrate concentrations. The combined effect between sulfide and nitrite was antagonistic effect.
authors.affiliation: Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Cai
authors.forename: Ping
authors.initials: P
authors.lastname: Zheng
mesh_terms: D000693:Anaerobiosis; D019149:Bioreactors / Q000382:microbiology*; D009573:Nitrites / Q000302:isolation & purification* / Q000378:metabolism; D012722:Sewage / Q000382:microbiology*; D013440:Sulfides / Q000302:isolation & purification* / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D009573:Nitrites; D012722:Sewage; D013440:Sulfides; D014874:Water Pollutants, Chemical