A Study of Aerobic Dentrification in Dentrihcation of Wastewater
LIANG Liu-yan,WANG Ping
(Beijing Cuo zhong Biological Science and Technology Co,Ltd,Beijing Sound Environmental Protection Group,Beijing 101102 China)
Abstract:SBR process was used in studying the phenomenon of aerobic denitrification during the denlmfication of wastewater.The test procedure was:anoxic mixing for 3 h,aerating for 8 h,anoxic mixing for l.5 h,settling for 1 h and draining.When the ρ(NH4+-N)and ρ(CODCr)of the influent water were 107 mg/L and 700 mg/L respectively,the removal rate of NH4+-N in the aerobic section reached 53.3% and the TN removal in the said section accounted for 71.23% of that of the whole cycle,which indicated that the aerobic denitrification played the main role in the denitrification in the whole cycle.
Key words:wastewater;denitrification;aerobic denitrification
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