Technology Status Review In Situ Oxidation
Abstract
Soil and groundwater contamination with CVOCs is a widespread problem at DOD sites. ISO has been rapidly adopted as a remediation technology for CVOCs in both soil and groundwater. However, the technology has only recently been developed, and there is little operational history. Sites contaminated with CVOCs have proven difficult and expensive to remediate, particularly when a DNAPL phase is present. On many sites these DNAPL accumulations are well below the water table, dispersed in very thin layers, difficult to find, and difficult to remove. Currently, pump and treat and excavation are the only proven technologies for treating DNAPL; however, they both have limitations. Pump and treat operations can provide adequate containment, but removal of any CVOC source is very slow. The DNAPL accumulations serve as a long-term reservoir of contaminants, requiring that the pump and treat operations be continued indefinitely. Excavation can remove CVOCs in soil, but large amounts of clean soil must be moved and excavations have to be dewatered to remove DNAPLs below the water table. Therefore, these technologies can be very slow and/or very expensive.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1999
- Accession Number
- ADA487961