BIOdek® Cross-Fluted Fills
High efficiency – low effluent rates
The structure and the high specific surfaces from 70 to 320 m2/m3 of GEA 2H BIOdek® cross-fluted fills are perfectly adjusted to all requirements in biological sewage treatment processes. Different shapes of the fills allow growing thin or thick biofilms depending on what the process requires.
GEA 2H BIOdek Cross-fluted fills: Technical Data
Material |
Void ratio (%) |
Length max (mm) |
Width max (mm) |
Standard height (mm) |
Continuous operation temperature (°C) |
Max. operation temperature (short term) (°C) |
PP |
> 97% |
2400 |
600 |
350 or 610 |
70 |
80 |
PVC |
55 |
60 |
Type |
KFP 338/638 |
KFC 338/638 |
KFP 327/627 |
KFC 327/627 |
KFP 319/619 |
KFC 319/619 |
Material |
PP |
PVC |
PP |
PVC |
PP |
PVC |
Specific surface area (m2/m3) |
70 |
125 |
150 |
Corrugation height (mm) |
38 |
27 |
19 |
Application Trickling Filter |
For any organic peak load, unless vertical flow fills are preferred |
Peak load For partly BOD-removal or if effluent load up to 50 mg/l is allowed Volume load can be up to 2,5 kg BOD/m3 |
For one-stage plants for all BOD effluent standards - with or without nitrification BOD-load >1kg/m3 |
Application Submerged Fixed Bed |
For BOD-removal of any load, unless vertical flow fills are preferred |
Only as distribution layer above the support system |
Downstream nitrification if no strong flushing is planned For BOD-removal by rotating biological contactor |