After the optimum dosage of the bio-carrier
was obtained from the laboratory scale experiment,
a pilot scale experiment was set up to examine the
effectiveness in organic removal of the biomass
attached inside the SOFTRON CUBE. Two aeration
reactors with the capacity of about 100 liters with
same size of air pumps were utilized in this experiment
as shown in Figure 4 (Nakahara et al.,2008a;
Nakahara et al., 2008b). One reactor was filled
with the SOFTRON CUBE at optimum dosage
obtained from the laboratory scale experiment.
Supernatant water of 50 liter was replaced by the
synthetic wastewater every 24 hours using the
fill-and-draw method until the steady state was
achieved in both reactors.