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- W1994707893 abstract "Abstract A 12 l gas–liquid–solid three-phase fluidized bed bioreactor in which biomass supported on activated charcoal was used to remove nitrate-nitrogen from wastewater and its performance was considered. The effects of temperature, pH, C/N ratio, gas flow rate and hydraulic residence time (HRT) on nitrate-nitrogen reduction were investigated and discussed. The optimum operated conditions such as temperature of 20–35 °C, pH value of 6.5–7.5, HRT of 3 h, C/N of 0.95–1 and gas influx of 0.3 m3/h were found. Under optimum operated conditions, the average removal ratios of COD and NOx-N are higher than 92% and 96%, respectively. In addition, the radial and axial positions have little influence on the local profiles of COD and NOx-N." @default.
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- W1994707893 date "2003-08-01" @default.
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- W1994707893 title "The denitrification treatment of low C/N ratio nitrate-nitrogen wastewater in a gas–liquid–solid fluidized bed bioreactor" @default.
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- W1994707893 doi "https://doi.org/10.1016/s1385-8947(03)00049-4" @default.
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