Keywords: aerobic biofilters, organics removal, tyre-tube beads, column study, synthetic wastewater, COD, chemical oxygen demand, wastewater treatment
Performance evaluation of an aerobic biofilter with high organics containing synthetic wastewater
The organics removal performance of a lab-scale aerobic biofilter of volume 0.6 L was studied using synthetic wastewater and waste automobile tyre-tube beads as media. The column study was performed under Chemical Oxygen Demand (COD) in the range of 500-1500 mg/L at an empty bed contact time (EBCT) of 2 h. The treatability constant at 27°C was found to be 41.963. A maximum COD removal efficiency of about 90% was attained at a COD loading rate of about 6 kg/m³/day. The biofilter handled a COD loading rate of about 17.9 kg/m3/day showing a COD removal efficiency of about 76%.