Example Illustrating the Number of 10 Inch Cartridge Elements Required To Process a 20,000 L Batch in 4 h
| Batch Volume (Vb, L) | Device Initial Flux (J0, disc, L/(m2·h)) | Maximum Throughput (Vmax, disc, L/m2) | Flux Ratio (α) | Capacity Ratio (β) | Membrane Area/10 Inch Cartridge Element (A10″, m2) | Number of 10 Inch Pleated Cartridge Elements (Nc) |
|---|---|---|---|---|---|---|
| 20,000 | 6000 | 4000 | 0.5 | 0.8 | 1.10 | 9 |
| 20,000 | 6000 | 4000 | 0.85 | 0.8 | 0.49 | 17 |
| 20,000 | 6000 | 2000 | 0.5 | 0.8 | 1.10 | 15 |
| 20,000 | 6000 | 2000 | 0.85 | 0.8 | 0.49 | 30 |
The data illustrate that for capacity controlled filtrations, flux ratios between pleated cartridge filters, and disc are not very critical in determining the cartridge elements required; however, capacity ratio and the membrane area per 10 inch cartridge elements are important.