Assessment of organic removal and sludge minimization proficiency in fixed Bed Bio-Reactor FBBR
Keywords:
Wastewater treatment, Aerobic biology, FBBR, Fiber mediaAbstract
Aerobic bioreactor using fixed fiber media (a type of FBBRs) was operated at loads ranging from 0.4 to 1.5 kgCOD/m3.day to determine organic matter handling capacity of the reactor for each load level. Besides, the amount of sludge generated was measured at each load and compared with the control model, which was a completely mixed activated sludge (CMAS) tank to evaluate the model's ability to reduce sludge. The results showed that the COD removal efficiency of the aerobic biological tank FBBR in this study was always above 96%, reaching the highest (98.91%) at COD loading rate of 1.2 kgCOD/m3.day. The generated sludge volume from the FBBR model ranged from 8.0 to 125.42 gTS/m3 of treated wastewater, while the generated sludge volume from the CMAS model ranged from 65.97 to 477.03 kg/m3 of treated wastewater. It could be seen that the volume of sludge generated by the FBBR model was lower than that of the CMAS model, so using FBBR can reduce the amount of sludge generated from the biological process of wastewater treatment.
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