Example: 50,000 cfm odor control scrubber (H2S control) at a typical municipal waste water treatment plant.
Based upon the tower diameters determined and a 10 ft packed depth:
| Packing Type | Design Gas Velocity | Tower Cross Sectional Area | Total Packing Volume |
| 1.5″ Saddles, 2″ Pall Rings | 290 ft/min | 50,000/172 = 172 ft2, 15′ diameter | 1,539 ft3 |
| 3.5″ Tri-Packs | 442 ft/min | 50,000/442 = 113 ft2, 12′ diameter | 1,130 ft3 |
| Lantec Q-PAC | 637 ft/min | 50,000/637 = 78.5 ft2, 10′ diameter | 785 ft3 – best choice |
By using Q-PAC, volume of packing is reduced by at least 30%!
