Treatability of sulfamerazine in sequential upflow anaerobic sludge blanket reactor (UASB)/completely stirred tank reactor (CSTR) processes

Abstract The treatability of pharmaceutical industry wastewater bearing the antibiotic sulfamerazine in the lab-scale continuously feed upflow anaerobic sludge blanket (UASB) reactor/continuously stirred tank reactor (CSTR) system was investigated in order to determine the changes in the characterization on composition of the wastewater during biotreatment. The BOD5/COD ratio was determined to assess the approximate biodegradability. When the initial sulfamerazine concentration was 10 mg/l the methane percentage reached around 76% while it was measured at 60% at a sulfamerazine concentration of 90 mg/l. The total (overall) COD removal efficiency of the sequential UASB + CSTR treatment system was determined as 97%. The results of this study indicated that the system exhibited a good removal performance for sulfamerazine.

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