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Due to the characteristics of the filter (Table 1 and Figure 1), the effluent filtration occurs by gravity with only a total head loss in the order of 2–3 cm. Fine bubble aeration provides the scouring energy to keep the filter surfaces clean.
Table 1

BCR system characteristics

Reactor volume (total) 0.06 m3 
HRT (calculated, average) 2–2.4 d 
Volumetric loading (COD) 0.35 kg/m3
Membrane surface 1.24 m2 
Air flow 40 L/min 
Membrane type Porex® corrugated radial cartridge 
Membrane material UHMWPE (ultra-high molecular weight polyethylene) 
Pore size 20 μm 
Dimensions of filter unit 15.5 cm (ext. diam.) × 25.4 cm (length) 
Specific surface area 0.62 m2/cartridge 
Reactor volume (total) 0.06 m3 
HRT (calculated, average) 2–2.4 d 
Volumetric loading (COD) 0.35 kg/m3
Membrane surface 1.24 m2 
Air flow 40 L/min 
Membrane type Porex® corrugated radial cartridge 
Membrane material UHMWPE (ultra-high molecular weight polyethylene) 
Pore size 20 μm 
Dimensions of filter unit 15.5 cm (ext. diam.) × 25.4 cm (length) 
Specific surface area 0.62 m2/cartridge 
Figure 1

The BCR filter medium (left) and section drawing (right).

Figure 1

The BCR filter medium (left) and section drawing (right).

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