Donnelly T

Ince BK

Ince O

Oktem YA

Sallis PJ

In this study, the optimum operating conditions of a lab-scale completely stirred acidogenic reactor treating a chemical synthesis-based pharmaceutical wastewater were determined. Individual effects of hydraulic retention time (HRT), organic loading rate (OLR) and pH on the degree of acidification were investigated at a mesophilic temperature (35 \ub1 1 \ub0C), for HRT in the range 8-24 h, OLR up to 14 kg COD/m3 d and pH in the range of 5.0-6.3. A maximum acidification level of 44% and COD removal efficiency of 13%, were obtained at an OLR of 13 kg COD/m3 d at pH of 5.5 \ub1 0.1 with an HRT of 12 h. Under these conditions, acetic, propionic and n-butyric acids were found to be predominant volatile fatty acids in the acidogenic reactor. \ua9 2006 Elsevier Ltd. All rights reserved

Determination of optimum operating conditions of an acidification reactor treating a chemical synthesis-based pharmaceutical wastewater

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