and denitrification and oxidation process could be completed in
the same MABR and BAC could prolong the usage period much
longer than that of traditional activated carbon. At the optimal
conditions, the effluent COD, oil content, TN and NH4 + -N was
45 mg/l, 2.8 mg/l, 6.8 mg/l and 3.6 mg/l respectively, reaching the
discharge standard. Comparing to traditional methods, the hybrid
MABR system has the characters of high biodegradability, shorter
HRT, higher effluent quality, and stable performance. Hence, it is
a promising method for oil-field wastewater treatment
and denitrification and oxidation process could be completed inthe same MABR and BAC could prolong the usage period muchlonger than that of traditional activated carbon. At the optimalconditions, the effluent COD, oil content, TN and NH4 + -N was45 mg/l, 2.8 mg/l, 6.8 mg/l and 3.6 mg/l respectively, reaching thedischarge standard. Comparing to traditional methods, the hybridMABR system has the characters of high biodegradability, shorterHRT, higher effluent quality, and stable performance. Hence, it isa promising method for oil-field wastewater treatment
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