In instances where the treatment effectiveness cannot accurately be estimated in a batch test or when higher confidence levels are required, column testing may be necessary. Column testing provides insight into how flow rates and residence times may be impact the outcomes for permeable reactive barriers (PRBs), in situ chemical oxidation (ISCO), or soil vapor extraction (SVE). In the case of biological conditions, columns allow for a constant air/oxygen supply (or other gasses such as methane) to assess the effectiveness of biosparging at the site.
XDD has experience conducting column testing for:
- Soil vapor extraction (SVE)
- Thermal-enhanced SVE and biosparging
- In situ chemical oxidation (ISCO)
- Zero valent iron (ZVI)
- Stabilization/sorption
- Custom designed column studies
In-house readings allow for XDD to assess the progress of the column studies to optimize treatment parameters, maximizing the eventual full-scale application design . As always, XDD also brings their considerable experience associated with the design and application of remedial technologies when designing, conducting, and analyzing data from our treatability column studies.
Email XDD at lcrawford@xdd-llc.com with inquiries about our treatability testing services. Additionally, a selection of our case studies can be found here.
XDD uses a methodical approach for our site evaluations. These evaluations are often aided by our state of the art treatability laboratory, confirming that the optimal remediation design has been selected for each site.