In the past 15 years, air-stripping's efficacy and low cost
have made the technology a popular method for removing
volatile organic compounds (VOCs) from contaminated
groundwater. Despite the technology's widespread use, little
attention has focused on the selection of the packed media,
even though VOC removals in air-stripping towers primarily
depend on the column's packing material. This research studied
a number of structured and random packing materials to
evaluate their performance under identical operating
conditions.
The various packing materials performed quite differently in terms
of VOC removal and pressure drop. Thus, the optimal design for an
individual packing material will feature air-strippers of a specified
dimension and operating conditions tailored for the selected packing
material. Using the extensive database generated by this study,
designers of treatment processes can optimize air-stripping performance
by choosing the liquid loadings and air-to-water ratios based
on the particular packing used. This article's findings should help lead
to more economical air-stripping operations and ensure that future
designs meet the prescribed VOC removal levels. Includes 28 references, tables, figures.
| Edition : | Vol. 94 - No. 9 |
| File Size : | 1
file
, 590 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 15 |
| Published : | 09/01/2002 |
