sludge rather than dispose it. Previous studies have shown that the
sewage sludge based activated carbon (SBAC) could be used as an
efficient catalyst for catalytic wet air oxidation of phenolic compounds
and catalytic ozonation of biologically pretreated CGW
(Marques et al., 2011; Zhuang et al., 2014b). To date, however,
the application of SBAC as catalyst supports in HFO of real industrial
wastewater has not been reported in the literature.
Additionally, though anoxic moving bed biofilm reactor
(ANMBBR) and biological aerated filter (BAF) process was successfully
applied to advanced treatment of real biologically pretreated
CGW, the system still had several problems to be solved, such as
overlong hydraulic residence times and interference of toxic compounds
(Zhuang et al., 2014c). However, the novel integration of
HFO and ANMBBR–BAF has substantial advantages to solve these
problems. In the present work, Fe oxides were supported on SBAC
(designated as FeOx/SBAC) and its catalytic activity on HFO of real
biologically pretreated CGW was investigated. Meanwhile, the possible
mechanisms for FeOx/SBAC catalytic reaction were discussed.
Furthermore, the performance of pollutants removal of the integration
of HFO and ANMBBR–BAF process was evaluated.