1,4-Dioxane Remediation by Extreme Soil Vapor Extraction (XSVE)
Abstract
Extreme Soil Vapor Extraction (XSVE) is an enhancement of SVE to specifically addresses 1,4-dioxane contaminated vadose zone soil by incorporating enhancements such as decreased infiltration, increased air flow, focused vapor extraction, and injection of heated air. Removal of 1,4-dioxane from the vadose zone cuts off contamination to groundwater. An XSVE field demonstration at Fonner McClellan AFB, CA removed ~95% of 1,4-dioxane from the treatment zone after about a year of operation. The XSVE system was comprised of a square of 4 injection wells with a central extraction well. Injection wells heated ambient air to 120 C.-10,000 Pore volumes were extracted during operation. A screening-level model (HypeVent XSVE) was developed as feasibility assessment and design tool for implementing XSVE. HypeVent XSVE sensitivity analyses showed that 1,4-dioxane removal could be further enhanced by injection of heated air with higher humidities. XSVE is a cost-effective remediation technology for1,4-dioxane in the vadose zone.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2018
- Accession Number
- AD1055463
Entities
People
- David Becker
- David R. Burris
- Paul C. Johnson
- Paul R. Dahlen
- Robert Hinchee