Abstract
This study was conducted to derive operating conditions for biological wastewater treatment targeting highconcentration dry condensate generated in the drying process of food waste. In the biological treatment of dry condensate, lab. scale (40 L/d) bioreactor was manufactured and used in the study to evaluate the water quality of the treated water according to the change in operating conditions and to derive stable operating factors. Changes in the influencing factors inside the aeration tank according to the change of BOD load, hydraulic retention time (HRT) and F/M ratio were observed during the operation of the lab. scale bioreaction process. Thereafter, the treatment efficiency was evaluated by measuring the water quality concentration of the treated water. As a result of the study, the water quality of the treated water was BOD 71.14 ± 10.19 mg/L, TOC 49.54 ± 9.64 mg/L, T-N 33.78 ± 5.00 mg/L, T-P 3.35 ± 1.24 mg/L was evaluated as the highest treatment efficiency, under the HRT 5 day, BOD Load 0.30 ± 0.02 kg BOD/d, F/M ratio 0.40 ± 0.02 kg BOD/kg MLSS/d operating condition. It is concluded that the results of this study can be used as data for ensuring stable treated water quality and complying with the emission standards at real plant.
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