Jar test of HFO was conducted in a batch mode using a 500 mL
jar with an effective wastewater volume of 300 mL. The reaction
was controlled at 20 C for all experiments. The fixed amount of
FeOx/SBAC was added into a jar followed by input of real
biologically pretreated CGW. The HFO reaction started after the
addition of a predetermined dosage of H2O2 (20 mg/L). The mixed
solution was stirred at 100 rpm during the reaction. Additionally,
the added concentration of tert-butanol (TBA) as scavenger for
OH was 50 mg/L. The supernatant of HFO was subsequently fed
to the ANMBBR–BAF system for the final purification. The startup
and operational strategies of ANMBBR–BAF system were
described by Zhuang et al. (2014c). The pH was adjusted using
H2SO4 (1 mol/L) and NaOH (5 mol/L).