Many packed column air stripping facilities were constructed in the 1980s to
remediate municipal groundwater supplies contaminated with volatile organic
compounds (VOCs) such as trichloroethylene (TCE), tetrachloroethylene (PCE), and
benzene. While the treatment equipment may have been built according to standards
in place at the time of construction, several of these air stripping towers have
since required major modifications in order to meet changing regulations or
increased water demands. This paper contains information outlining modifications
to existing air stripping facilities that have been undertaken in an effort to
prepare these facilities for the 21st century. These modifications were required
to accommodate new wells or when actual raw water VOC concentrations exceeded the
original design values. Modifications may also be required if new VOCs appear in
the raw water stream or if regulatory agencies impose stricter regulations.
Specific examples of the modification of packed column air strippers include the
installation of new water distribution systems, enhanced water distribution
systems, tower/packing extensions, and/or new air handling systems. Actual VOC
performance data from the modified facilities is presented from both before and
after system modifications. Additionally, this paper includes recommendations on
design features that can be built into new air stripping towers to facilitate
future modifications. Includes 2 references, tables.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 91 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 01/01/1999 |
