Treatment Of ASBR Pretreating Coking Wastewater Using Aerobic/Anoxic/Aecobic Biofilm SBR Reactor

The Characteristics of three stage Biofilm SBR Reactor Treating Coking Wastewater with the pretreatment of ASBR was studied in this paper. The influent of this experiment was coking wastewater with the pretreatment of ASBR. The system was made up of (Ol)(AerationReactor)+(A)(Anoxic Reactor)+(O2)(Aeration Reactor). Three reactor accomplished COD removaK denitrificationx nitrification separately. The total reacting period was 36 hour. At influent COD of 450~580mg/L, NH3-N of 180~200mg/L, the effluent COD was less than 150 mg/L, NH3 -N was less than 25 mg/L, the COD removal efficiency was from 73.8% to 83.4%, NH3-N removal efficiency was from 82.1% to 89.7%. Effluent quality satisfied the national standard about wastewater discharge 《GB8978 -1996》.